# OJ Electronics > OJ Electronics A/S is a Danish developer and manufacturer of electronic controls, based in Sønderborg, Denmark. The website is split into three product sites — Thermostats (electric floor heating and ice & snow melting), Controllers & Sensors (HVAC and ventilation controls, sensors and cloud solutions) and Drives (frequency drives for ventilation, heat recovery, cooling and heating) — plus a company site and a career site. All content is in English unless noted. Each product page has specifications, documentation and datasheets. Sitemaps: https://ojelectronics.com/sitemap_index.xml, https://ojelectronics.com/thermostats/sitemap_index.xml, https://ojelectronics.com/controllers-sensors/sitemap_index.xml, https://ojelectronics.com/drives/sitemap_index.xml, https://ojelectronics.com/career/sitemap_index.xml ## Thermostats [https://ojelectronics.com/thermostats/](https://ojelectronics.com/thermostats/): OJ Electronics provides industry-leading electric underfloor heating systems for residential and commercial spaces. Our products offer customisable heating schedules, precise control, and energy efficient solutions, enhancing your comfort and safety. ### Product categories - [Accessories](https://ojelectronics.com/thermostats/product-cat/accessories/): Browse OJ Electronics' accessories for floor heating thermostats: front covers, frames, backing plates, and colour kits for MCC4, MCD4 and MxD5. - [Australasia & Africa](https://ojelectronics.com/thermostats/product-cat/australasia-africa/): OJ Electronics offers WiFi, voice-controlled, and digital thermostats for electric underfloor heating and ice & snow melting across Australasia and Africa. - [Basic Thermostats](https://ojelectronics.com/thermostats/product-cat/basic-thermostats/): Our simple floor-heating thermostats are ideal wherever you want basic temperature management – combined with an exceptionally high level of quality that ensures perfectly reliable operation for year… - [Discontinued Products](https://ojelectronics.com/thermostats/product-cat/discontinued-products/): OJ Electronics' discontinued products archive: floor heating and hydronic thermostats no longer sold, with documentation kept for existing installations. - [EAN 5703502910178](https://ojelectronics.com/thermostats/product-cat/ean-5703502910178/): This OJ Electronics product category lists the item under EAN 5703502910178: a WiFi LED touch thermostat for electric underfloor heating. - [Electric Floor Heating Discontinued](https://ojelectronics.com/thermostats/product-cat/discontinued-products/electric-floor-heating-discontinued/): These products have been discontinued, but we will of course still be supporting our customers in terms of documentation. - [Europe, Asia & South America](https://ojelectronics.com/thermostats/product-cat/europe-asia-south-america/): OJ Electronics offers WiFi, voice-controlled, and digital thermostats for electric underfloor heating across Europe, Asia, and South America. - [Floor Heating](https://ojelectronics.com/thermostats/product-cat/floor-heating/): OJ Electronics' Floor Heating category covers thermostats for electric underfloor heating, from WiFi touch models to simple non-programmable controls. - [Hydronic Floor Heating](https://ojelectronics.com/thermostats/product-cat/discontinued-products/hydronic-floor-heating/): OJ Electronics' hydronic floor heating products are discontinued, but documentation stays available to support customers with existing installations. - [Ice & Snow Melting](https://ojelectronics.com/thermostats/product-cat/ice-snow-melting/): OJ Electronics' Ice & Snow Melting range includes all-in-one controllers and sensors for hydronic and electric de-icing systems outdoors. - [Power Module](https://ojelectronics.com/thermostats/product-cat/power-module/): OJ Electronics' power modules, like the USG5, extend thermostat output for larger electric underfloor heating applications with a sleek design. - [Programmable Thermostats](https://ojelectronics.com/thermostats/product-cat/programmable-thermostats/): Our Programmable Thermostats are ideal for every electrical floor heating need. They are easy to program and combine comfort with energy savings. An excellent match for systems with a green/environme… - [Sensors](https://ojelectronics.com/thermostats/product-cat/sensors/): OJ Electronics' sensor range covers floor, room, ground, gutter, and outdoor sensors compatible with its clock, touch, DIN-rail, and GFCI thermostats. - [USA & Canada](https://ojelectronics.com/thermostats/product-cat/usa-canada/): OJ Electronics' USA & Canada range covers WiFi, touch, and non-programmable thermostats for floor heating, plus power modules and ice & snow controls. - [WiFi Thermostats](https://ojelectronics.com/thermostats/product-cat/wifi-thermostats/): OJ Electronics' WiFi thermostats connect electric underfloor heating to an app, with voice control options via Amazon Alexa and Google Assistant. ### Products - [ACC-001 & ACC-001-B5](https://ojelectronics.com/thermostats/products/uk-backing-plate/): The UK backing plates fit the round frames from OJ Electronics. - [ACC-008](https://ojelectronics.com/thermostats/products/square-frames/): Explore high-quality square frames by OJ Electronics. Designed for all OJ thermostats. Available in various color variants to meet your aesthetic requirements. - [ACC-008-R3F4](https://ojelectronics.com/thermostats/products/acc-008-r3f4/): The AUS/NZ frame from OJ Electronics fits all OJ thermostats in square design. - [ACC-012](https://ojelectronics.com/thermostats/products/front-cover-for-mcc4-mcd4/): Explore our high-quality MCC4/MCD4 square covers designed for premium clock thermostats. Suitable for various frames and comes in four colour variants. Order now from OJ Electronics! - [ACC-030](https://ojelectronics.com/thermostats/products/front-cover-for-mcd5/): Explore OJ Electronics' high-quality ACC-030 square front cover for MxD5 thermostats. Perfect for customization! Available in pure white, creamy white, and aluminum. Shop now. - [ACC-031](https://ojelectronics.com/thermostats/products/acc-031/): The colour kit fits our MCD3 digital thermostat. - [ADG](https://ojelectronics.com/thermostats/products/adg/): The ADG programmable thermostat with built-in 15 mA EGFPD delivers optimal comfort and low energy use for electric underfloor heating. - [ASG](https://ojelectronics.com/thermostats/products/asg/): Discover the ASG Power Module with built-in 15mA EGFPD for large applications from OJ Electronics OJ Microline. Easy to use with no need for a manual and various voltages available. Optimize your flo… - [ECD4](https://ojelectronics.com/thermostats/products/ecd4/): Upgrade your systems with our all-in-one ECD4 DIN Rail Thermostat, featuring extended temperature control, intuitive interface, and safety features, suitable for various applications. - [ETF-110/99C](https://ojelectronics.com/thermostats/products/thin-floor-sensor-with-flat-wire/): Discover the ETF-110/99C Thin Floor Sensor with Stiff Wire, the ideal choice for floor heating thermostats. Compatible with various OJ Microline products and designed for the US and Canadian markets. - [ETF-144/99A](https://ojelectronics.com/thermostats/products/floor-sensor-with-stiff-wire/): Check out OJ Electronics' ETF-144/99A Floor Sensor with stiff wire. Suitable for various floors and compatible with our Basic Clock Thermostats, Basic Thermostats, and On/Off Thermostats. - [ETF-144/99T](https://ojelectronics.com/thermostats/products/thin-floor-sensor-with-stiff-wire/): Discover OJ Electronics' premium quality ETF-144/99T thin floor sensor fitted with a stiff wire that is suitable for floor heating thermostats. Compatible with a variety of OJ Microline™ products for… - [ETF-622](https://ojelectronics.com/thermostats/products/temperature-sensor-for-pipes/): Monitor and control your heating and cooling systems effectively with the ETF-622 Temperature Sensor. Suitable for pipe mounting and designed to provide optimum temperature control. The sensor from O… - [ETF-744](https://ojelectronics.com/thermostats/products/outdoor-temperature-sensor/): Discover OJ Electronics' outdoor temperature sensor with reliable weather monitoring ETF-744. Perfect for measuring rapid drops in temperature and widely used in combination with our gutter sensors. - [ETF-944/99-H](https://ojelectronics.com/thermostats/products/remote-room-sensor/): Explore OJ Electronics' ETF-944/99-H - A versatile remote room sensor ideal for DIN-rail thermostats ESD4 and ETN4. Excellent for temperature range of -30 - +125°C. Operable in Europe, Asia & South A… - [ETI](https://ojelectronics.com/thermostats/products/eti-compact-on-off-thermostat/): Discover our robust ETI Compact On/Off Thermostat designed for easy industrial control of a single electric heating element. Provides optimal performance for pumps, compressors & pipe frost protectio… - [ETN4](https://ojelectronics.com/thermostats/products/all-in-one-thermostat-etn4/): Discover the ETN4 All-In-One DIN Rail Thermostat from OJ Electronics – Your complete solution for floor heating control, saunas, frost protection, pipe insulation, and cooling systems. Suitable for a… - [ETO2](https://ojelectronics.com/thermostats/products/control-system-for-ice-snow-melting/): Discover the ETO2 Controller, an intelligent all-in-one solution for electric and hydronic ice and snow melting. Ensure optimal operation with minimal energy consumption using our innovative technolo… - [ETOG-55](https://ojelectronics.com/thermostats/products/ground-sensor/): Discover the innovative ETOG-55 ground sensor from OJ Electronics, expertly designed for outdoor temperature and moisture detection. Improve your snow and ice problem prevention today. - [ETOG-56](https://ojelectronics.com/thermostats/products/embedded-ground-sensor/): Experience precise outdoor temperature and moisture detection with OJ Electronics' ETOG-56 Embedded Ground Sensor. Explore the innovative design suitable for tube mounting with ETOK-1 for easy instal… - [ETOG/K-56](https://ojelectronics.com/thermostats/products/etog-k-56/): The ETOG/K-56 embedded ground sensor, supplied with its ETOK-1 sensor tube, measures outdoor temperature and moisture for de-icing systems. - [ETOP-4770](https://ojelectronics.com/thermostats/products/snow-melt-controller-protected/): Explore the ETOP-4770 Snow Melt Controller by OJ Electronics – A smart, weather resistant, and energy efficient solution for snow and ice melt systems. Built for extreme weather conditions, easy to i… - [ETOP-R](https://ojelectronics.com/thermostats/products/remote-control-for-etop/): Control and view your ice and snow melting system's status from indoors with the ETOP-R remote control. Conserve energy and cost with efficient heating only when needed. - [ETOR](https://ojelectronics.com/thermostats/products/gutter-sensor/): Discover the high-quality ETOR-55 Gutter Sensor designed for moisture measurement in various regions. Perfect foundation for your customised solutions. Explore related products now! - [ETR](https://ojelectronics.com/thermostats/products/thermostat-for-heating-cable-in-gutters/): Economical thermostat from OJ Electronics for controlling de-icing cables in gutters for small buildings. Easy set-up, LED indicators, and NTC sensor for precision temperature control. - [ETR2](https://ojelectronics.com/thermostats/products/snow-melting-for-small-applications/): Discover the cost-effective ETR2 from OJ Electronics, our easy-to-install ice and snow melting controller designed for small ground areas and gutters. Perfect for keeping crucial areas free of ice an… - [ETV](https://ojelectronics.com/thermostats/products/simple-thermostat-etv/): Explore the efficient ETV Simple DIN Rail Thermostat from OJ Electronics. Designed for under-floor and electrical heating control. Compact design with reliable setback mode, perfect for remote system… - [MCD3](https://ojelectronics.com/thermostats/products/digital-thermostat-mcd3/): Get the MCD3 Digital Thermostat from OJ Electronics, designed to an exceptional standard for electric underfloor heating control. Energy efficient, user friendly, and meeting all requirements of the… - [MCD3-UA](https://ojelectronics.com/thermostats/products/mcd3-ua/): The MCD3-UA digital thermostat meets the EU Ecodesign Directive for electric underfloor heating, cutting power wastage with an easy interface. - [MCD4](https://ojelectronics.com/thermostats/products/mcd4/): An “all-in-one” clock thermostat for electric underfloor heating control where optimum comfort temperature and minimum energy consumption are required. - [MCD5](https://ojelectronics.com/thermostats/products/touch-thermostat-mcd5/): Experience the highest level of comfort and energy efficiency with our advanced MCD5 programmable electric underfloor heating touch screen thermostat. Features user-friendly interface, QR-code read o… - [MCD5-UA](https://ojelectronics.com/thermostats/products/touch-thermostat-mcd5-2/): Optimize your comfort with MCD5-UA touch clock thermostat by OJ Electronics. Our product ensures the perfect temperature and minimum energy consumption. 5-year battery backup and compatible with exis… - [MTC-UA](https://ojelectronics.com/thermostats/products/manual-thermostat-mtc/): Our MTC thermostat is a manual electronic heating thermostat with no maintainance. Enjoy an electronic thermostat for accurate temperature control ensuring a high comfort of the floor surface or the… - [MTU2](https://ojelectronics.com/thermostats/products/on-off-thermostat-mtu2/): Discover the MTU2 thermostat by OJ Electronics. A reliable, high-comfort solution for controlling underfloor & electrical heating up to 3600W, 16A. Designed for easy wall mounting and features setbac… - [MWD5 Voice Control](https://ojelectronics.com/thermostats/products/mwd5-voice-control/): Voice and WiFi Thermostat to control your electric underfloor heating system with the OJ Microline™ MWD5. Get full access and control - [MWD5 WiFi](https://ojelectronics.com/thermostats/products/wifi-thermostat-mwd5/): Smart Home Heating Control OJ Microline™ WiFi Thermostat MWD5, enabling users to manage electric underfloor heating systems via an app - [MWD5-UA Voice Control](https://ojelectronics.com/thermostats/products/mwd5-ua-voice-control/): The MWD5-UA voice and WiFi thermostat lets users control electric underfloor heating remotely via app or voice, on any installation scale. - [MWD5-UA WiFi](https://ojelectronics.com/thermostats/products/wifi-thermostat-mwd5-ua/): Smart home heating control of your electric underfloor heating systems OJ Microline™ MWD5-UA WiFi thermostat. Accessible through an app - [OCD4](https://ojelectronics.com/thermostats/products/clock-thermostat-ocd4/): Discover OJ Electronics' versatile OCD4 Clock Thermostat for electric underfloor heating control. With optimized comfort temperature and significant energy savings, it's the top choice for underfloor… - [OCD5](https://ojelectronics.com/thermostats/products/touch-thermostat-ocd5/): “All-in-one” clock thermostat for electric underfloor heating creates optimal comfort temperature and the lowest possible energy consumption. - [OCD6](https://ojelectronics.com/thermostats/products/touch-thermostat-ocd6/): Experience OJ Electronics' temperature control with OCD6 programmable touch thermostat. User-friendly interface, energy monitoring, and QR-code readouts. Perfect for efficient underfloor heating. - [OWD5 WiFi](https://ojelectronics.com/thermostats/products/wifi-thermostat-owd5/): The OWD5 WiFi thermostat lets users control electric underfloor heating systems of any scale remotely via app, with access anywhere. - [UDG](https://ojelectronics.com/thermostats/products/udg/): Discover the UDG programmable thermostat at OJ Electronics. Designed for electric underfloor heating control, it optimizes comfort temperature and minimizes energy consumption. - [UDG4 / ADG4](https://ojelectronics.com/thermostats/products/udg4-adg4/): Explore the UDG4 and ADG4 touch thermostats by OJ Electronics for efficient underfloor heating. Experience smart and intuitive control with minimal energy consumption. Perfect for tile, stone, lamina… - [USG](https://ojelectronics.com/thermostats/products/usg/): Explore OJ Electronics' large applications of power module with built-in GFCI. Increasing your output by 15A per module, making it efficient, intuitive and stylish. Perfect for wet-room installations - [USG5™](https://ojelectronics.com/thermostats/products/usg5/): Discover the OJ Microline™ USG5 Power Module, an innovative power solution for underfloor heating. With a built-in GFCI, LED indicator, and compatibility with various thermostats, it’s designed for e… - [UTN4 / ATN4](https://ojelectronics.com/thermostats/products/utn4-atn4/): Find out the powerful UTN4 / ATN4 thermostats from OJ Electronics, specifically designed for optimal control of electric underfloor heating. Equipped with the latest features, including sleek design… - [UTN5™](https://ojelectronics.com/thermostats/products/utn5/): Unveiling the elegant OJ Microline UTN5 non-programmable thermostat. Offering a sleek design, easy installation process, and multiple applications mode. Ideal for various floor types including tile,… - [UWG4™ / AWG4](https://ojelectronics.com/thermostats/products/uwg4-awg4/): Wi-Fi thermostats with voice control and smart touch control. Remote access, and compatible with both Hey Google and Amazon's Alexa. - [UWG5™](https://ojelectronics.com/thermostats/products/uwg5/): WiFi thermostat smart home control. Control your thermostat remotely for ultimate comfort and convenience. OJ Microline™ UWG5™ ### Pages - [Contact](https://ojelectronics.com/thermostats/contact/): Get in touch with OJ Electronics, a global leader in floor heating, for expert support on our products, to request a quote, or to locate our subsidiaries & agencies worldwide. - [wizard was this useful?](https://ojelectronics.com/thermostats/wizard-was-this-useful/) - [USA and Canada](https://ojelectronics.com/thermostats/usa-and-canada/): OJ Electronics develop the world's best underfloor heating components with economical, intelligent thermostats that are universally compatible, easy to install, and intuitive to control. Our thermost… - [wizard your order handling](https://ojelectronics.com/thermostats/wizard-your-order-handling/) - [wizard was useful](https://ojelectronics.com/thermostats/wizard-this-was-useful/): Thank you! We appreciate your feedback.   - [Newsletter signup](https://ojelectronics.com/thermostats/newsletter-signup/): Subscribe to Know-How News for the latest updates on electric floor heating, HVAC controls, and industry events. Tailor your feed and enjoy insightful content delivered monthly. - [Cookie Policy](https://ojelectronics.com/thermostats/oj-electronics-cookie-policy-floor-heating-solutions/): Learn about OJ Electronics' Cookie Policy for floor heating systems. Discover how we use cookies to provide you an optimized browsing experience on our website. - [Electric Floor Heating](https://ojelectronics.com/thermostats/electric-floor-heating/): Discover OJ Electronics' extensive range of reliable & innovative thermostats for underfloor heating. Find solutions tailored to your specific needs with our array of smart and programmable options. - [Ice & Snow Controls](https://ojelectronics.com/thermostats/ice-snow-controls/): Discover the peace of mind that comes with our intelligent Ice & Snow Melting Systems. Optimal for safety and energy usage, perfect for any home and business. - [wizard technical](https://ojelectronics.com/thermostats/wizard-technical/) - [Support](https://ojelectronics.com/thermostats/support/): Need help for troupbleshooting? Use our support to find information about a specific product, get technical support, documentation, manuals, step-by-step guides and much more. You can also go to Cust… - [MCD3: Choosing and programming a heating schedule](https://ojelectronics.com/thermostats/support/mcd3-choosing-and-programming-a-heating-schedule/): Learn how to choose and program a heating schedule for your MCD3 thermostat, with step-by-step instructions and heating schedule options to fit your lifestyle. - [UWG4™ / AWG4: The thermostat can’t find the Wi-Fi network](https://ojelectronics.com/thermostats/support/uwg4-awg4-the-thermostat-cant-find-the-wi-fi-network/): Is your UWG4 or AWG4 thermostat unable to find your Wi-Fi network? Learn how to solve this issue with our easy-to-follow guide and get your floor heating system connected! - [MCD3: Temporary – and manual override](https://ojelectronics.com/thermostats/support/mcd3-temporary-and-manual-override/): Learn how to use temporary and manual override functions on the MCD3 thermostat for effective heating control. Step-by-step guide, tips and support from OJ Electronics. - [UWG4™ / AWG4: Troubleshooting Wi-Fi issues](https://ojelectronics.com/thermostats/support/uwg4-awg4-troubleshooting-wi-fi-issues/): Learn how to troubleshoot Wi-Fi connectivity problems with your UWG4 or AWG4 floor heating system through our step-by-step video guide. - [UWG4™ / AWG4: The thermostat can’t connect to the server](https://ojelectronics.com/thermostats/support/uwg4-awg4-the-thermostat-cant-connect-to-the-server/): Struggling to connect your UWG4 / AWG4 thermostat to the server? Follow our step-by-step troubleshooting guide to resolve Wi-Fi and network connection problems easily. - [UWG4™ / AWG4: The thermostat can’t connect to the Wi-Fi network](https://ojelectronics.com/thermostats/support/uwg4-awg4-the-thermostat-cant-connect-to-the-wi-fi-network/): Resolve your UWG4/AWG4 thermostat Wi-Fi connection issues with this step-by-step OJ Electronics support guide, providing easy solutions to ensure proper connectivity. - [UWG4™ / AWG4: Missing/Changing the Distributor ID](https://ojelectronics.com/thermostats/support/uwg4-awg4-missing-changing-the-distributor-id/): Learn how to change or find a missing Distributor ID (DID) for your UWG4 and AWG4 Wi-Fi Thermostat. In this guide you can learn how to generate advanced setup in your thermostat. - [UWG4™ / AWG4 / UDG4™: Ground fault (GFCI/EGFPD)](https://ojelectronics.com/thermostats/support/uwg4-awg4-udg4-ground-fault-gfci-egfpd/): If a ground fault occurs, the red LED on the right side of the thermostat will indicate this. The LED can indicate four different GFCI/EGFPD states: Normal, tripped, error og stop state - [UWG4™/AWG4/UDG4: The thermostat doesn’t heat when it is supposed to](https://ojelectronics.com/thermostats/support/uwg4-awg4-udg4-the-thermostat-doesnt-heat-when-it-is-supposed-to/): Find answers to common thermostat heating issues at OJ Electronics. Learn how to resolve temperature limit settings and other factors causing heating problems. - [UWG4™ / UDG4™: Changing the floor load](https://ojelectronics.com/thermostats/support/udg4-changing-the-floor-load/): Lær hvordan du ændrer gulvbelastningsindstillingen for dit OJ Electronics gulvvarmesystem med denne trin-for-trin guide. Få support og svar på alle dine spørgsmål om vores produkter. - [UWG4™/AWG4: The time doesn’t match the real time](https://ojelectronics.com/thermostats/support/uwg4-awg4-the-time-doesnt-match-the-real-time/): Follow our easy guide to quickly resolve the time mismatch issue on your UWG4/AWG4 thermostat, ensure proper synchronization with server, and update your ZIP-code settings. - [UWG5™ support](https://ojelectronics.com/thermostats/support/uwg5/): Support hub for the OJ Electronics UWG5 thermostat: FAQs, technical assistance, quotation requests, and order handling in one place. - [UWG4™ / AWG4: Connecting to Wi-Fi](https://ojelectronics.com/thermostats/support/uwg4-awg4-connecting-to-wi-fi/): Easily connect your UWG4 / AWG4 floor heating thermostat to Wi-Fi with our comprehensive step-by-step guide. Improve temperature control and energy efficiency in your home. - [wizard help](https://ojelectronics.com/thermostats/wizard-help/) - [wizard request quotation](https://ojelectronics.com/thermostats/wizard-request-quotation/) ## Controllers & Sensors [https://ojelectronics.com/controllers-sensors/](https://ojelectronics.com/controllers-sensors/): All our HVAC Controls & Drives are energy efficient, easy to install and designed with simplicity and efficiency in mind. ### Product categories - [Controllers](https://ojelectronics.com/controllers-sensors/product-cat/controllers/): Discover our range of advanced air handling unit controllers designed for optimal performance and seamless integration. Improve your HVAC system today. - [Modular and Compact Systems](https://ojelectronics.com/controllers-sensors/product-cat/controllers/modular-and-compact-systems/): More efficient, more effective and easier to handle for everyone involved What is more, you can get everything you need from the OJ Air2 series: everything fits perfectly together. The QuickPlug™ Mod… - [Compact Systems](https://ojelectronics.com/controllers-sensors/product-cat/controllers/compact-systems/): Discover the AHC-3000 series of compact and efficient AHU controllers for seamless control, with Bluetooth, Modbus, and intuitive touch operation options. - [Cloud Solution](https://ojelectronics.com/controllers-sensors/product-cat/controllers/cloud/): OJ Electronics' cloud-based system gives a full overview of all connected AHU controllers and their current status in one place. - [Sensors](https://ojelectronics.com/controllers-sensors/product-cat/sensors/): Browse OJ Electronics' sensors for air handling units, covering pressure, temperature, humidity and air quality measurement. - [Air Quality](https://ojelectronics.com/controllers-sensors/product-cat/sensors/air-quality/): Air quality sensors from OJ Electronics deliver high performance with minimal maintenance for ventilation and AHU applications. - [Humidity](https://ojelectronics.com/controllers-sensors/product-cat/sensors/humidity/): OJ Electronics' humidity sensors measure air humidity in rooms and ventilation systems, including combined Modbus humidity/temperature units. - [Pressure](https://ojelectronics.com/controllers-sensors/product-cat/sensors/pressure/): Pressure sensors from OJ Electronics for air handling units and ventilation systems. See the range with datasheets and product documentation. - [Temperature Sensors](https://ojelectronics.com/controllers-sensors/product-cat/sensors/temperature-sensors/): OJ Electronics' ETF temperature sensors are designed for heating, ventilation and cooling systems, with several models to fit your application. - [Temperature Transmitters](https://ojelectronics.com/controllers-sensors/product-cat/sensors/temperature-transmitters/): OJ Electronics' temperature transmitters measure duct, outdoor and room temperature, including the TTH-6202, TTH-6040-O and TTH-6040-W. - [Power Controllers](https://ojelectronics.com/controllers-sensors/product-cat/misc/power-controllers/): OJ Electronics' power controllers regulate small heating cables, electric radiators and underfloor heating, including EFM, EFK and EFH series. - [Room Control](https://ojelectronics.com/controllers-sensors/product-cat/misc/room-control/): OJ Electronics' room control range includes VAV zone modules and the RPT-20T room unit for energy-optimised comfort control per room. - [Temperature Controllers](https://ojelectronics.com/controllers-sensors/product-cat/misc/temperature-controllers/): OJ Electronics' temperature controllers cover floor heating, frost protection and industrial regulation, including the ETN4, TRD and ETI series. - [Misc.](https://ojelectronics.com/controllers-sensors/product-cat/misc/): Browse OJ Electronics' miscellaneous controllers for room control, power control and temperature regulation in HVAC systems. - [Discontinued Products](https://ojelectronics.com/controllers-sensors/product-cat/discontinued-products/): See OJ Electronics' discontinued controllers and sensors; product documentation remains available for existing installations. ### Products - [AHC-3000-HMI-35T](https://ojelectronics.com/controllers-sensors/products/ahu-control-panel/): User-friendly AHU Control Panel AHC-3000-HMI-35T for AHU's, offering intuitive operation, and compatibility with OJ Air AHC-3000 systems. - [AHC-3000-T](https://ojelectronics.com/controllers-sensors/products/ahu-controller-ahc-3000-t/): Experience efficient, scalable AHU control with the AHC-3000-T Compact AHU Controller featuring built-in Modbus and OJ Air Cloud monitoring. - [Documentation de service sur site OJ DV (French)](https://ojelectronics.com/controllers-sensors/products/documentation-de-service-sur-site-oj-dv-french/): Retrouvez ici toute la documentation de service essentielle pour OJ DV : manuels, spécifications techniques et guides d'entretien. - [EFH](https://ojelectronics.com/controllers-sensors/products/efh-power-controller/): EFH Power Controller - High-quality, easy-to-use controllers designed for precise room temperature control in HVAC systems - [EFK](https://ojelectronics.com/controllers-sensors/products/efk-power-controllers/): EFK power controllers. Power controllers for wall mount and optimal temperature control in heating systems, ventilation, radiators and more - [EFM](https://ojelectronics.com/controllers-sensors/products/efm-power-controllers/): EFM Power Controllers, designed for precise control of electrical heating in HVAC applications, noiseless and low life cycle costs - [EFRP-900](https://ojelectronics.com/controllers-sensors/products/efrp-900-remote-set-potentiometer/): EFRP is used as an external potentiometer for power controllers. - [EFRP-x1](https://ojelectronics.com/controllers-sensors/products/temperature-controller-efrp/): The EFRP is a series of proportional temperature controllers designed to maintain the air temperature in heating and ventilation systems. - [ETFWP-998](https://ojelectronics.com/controllers-sensors/products/room-control-panel/): Room Control Panel ETFWP-998 for climate control and energy savings ideal for hotels, offices, and commercial spaces. - [ETI](https://ojelectronics.com/controllers-sensors/products/eti-compact-on-off-thermostat/): ETI is a compact On/Off thermostat range for industrial use, mainly controlling single electric heating elements in floor and radiant heating. - [ETN4](https://ojelectronics.com/controllers-sensors/products/all-in-one-thermostat-etn4/): If you need a thermostat for floor heating control, sauna, frost protection of pipes or cooling applications, the ETN4-1999 gets the job done. - [ETT](https://ojelectronics.com/controllers-sensors/products/ett-6-step-controllers/): ETT-6 step controllers for controls of electric heating coils, refrigeration compressors, fans, and more in HVAC systems. - [F-NVP](https://ojelectronics.com/controllers-sensors/products/leak-alarm-relay/): Early warning system for moisture & water leakage in homes and HVAC installations. Protect your property from condensation and burst pipes. - [HTH-6121](https://ojelectronics.com/controllers-sensors/products/hth-6121-humidity-transmitter/): HTH-6121 series of humidity transducers, for measuring air humidity in rooms, ventilation systems, and aggressive environments. - [HTH-6200](https://ojelectronics.com/controllers-sensors/products/humidity-temperature-sensor-hth-6200/): Humidity and Temperature Sensor HTH-6200 with Modbus communication, adjustable length, and direct installation in ventilation system. - [NTC-12k-sensors](https://ojelectronics.com/controllers-sensors/products/temperature-sensors-ntc-12k-for-hvac-systems-oj-electronics/): Versatile and reliable NTC-12K temperature sensors tailored for heating, ventilation and cooling systems. Improve performance & efficiency - [OJ Air Cloud](https://ojelectronics.com/controllers-sensors/products/oj-air-cloud-ventilation/): OJ Air Cloud Ventilation Management for indoor climate and energy efficiency. Troubleshoot remotely, and full remote support. - [OJ Air™ Plus Master](https://ojelectronics.com/controllers-sensors/products/oj-air-plus-master/): Discover OJ Air™ Plus MASTER, a complete and advanced AHU control system designed for maximum functionality. Versatile, flexible, and user-friendly with QuickPlug™ Modbus technology. - [OJ Air2™ Extension Module](https://ojelectronics.com/controllers-sensors/products/ahu-oj-air2-ext/): Enhance the functionality of your air handling unit with OJ Air2 Ext, for controlling and monitoring multiple components. - [OJ Air2™ Extension Module 45](https://ojelectronics.com/controllers-sensors/products/oj-air2-ext-45/): OJ Air2 Ext 45 Extension Module. Precise control for heating and cooling applications. Flexible HVAC Control Solutions. - [OJ Air2™ FANIO](https://ojelectronics.com/controllers-sensors/products/oj-air2-ahu-fan-control/): OJ-Air2 AHU Fan Control. Minimize internal cabling and reduce installation errors. Filter monitoring, temperature measurement, damper control. - [OJ Air2™ FANIO21](https://ojelectronics.com/controllers-sensors/products/ahu-fan-control/): AHU Fan Control. OJ AIR2 FANIO21 for mounting in AHU fan section. For controlling valves, dampers, and monitoring temperature and filters. - [OJ Air2™ HMI 35T](https://ojelectronics.com/controllers-sensors/products/ahu-control-touch-panel/): AHU Control touch panel – OJ AIR2 HMI 35T a intuitive Air Handling Unit controller with color touchscreen for indoor air management. - [OJ Air2™ Master](https://ojelectronics.com/controllers-sensors/products/oj-air2-master/): Optimal energy consumption with the OJ Air2 Master Module for ventilation systems. Built-in web server, and QuickPlug™ Modbus technology. - [OJ Air2™ Power Supply](https://ojelectronics.com/controllers-sensors/products/oj-air2-power-supply/): OJ Air2 Power Supply designed to control air handling units with integrated components, energy savings and optimized performance. - [OJ DV On-site Service Documentation (English)](https://ojelectronics.com/controllers-sensors/products/oj-dv-on-site-service-documentation/): Find all essential OJ DV service documentation in one place, including manuals, technical specifications and maintenance guides. - [OJ DV Vor-Ort-Service Dokumentation (German)](https://ojelectronics.com/controllers-sensors/products/oj-dv-vor-ort-service-dokumentation-german/): Hier finden Sie alle wichtigen Service-Unterlagen für OJ DV: Handbücher, technische Daten und unser PC-Tool an einem Ort. - [OJ-Air-Plus-HMI-35T](https://ojelectronics.com/controllers-sensors/products/oj-air-plus-hmi-35t/): Explore OJ-AIR-PLUS-HMI-35T, an intuitive control panel perfect for air handling units with easy operation, visible values, and language compatibility. Developed for easy installation and service.SEO… - [OJ-Air2-HMI-20T](https://ojelectronics.com/controllers-sensors/products/ahu-controller-indoor-touch/): AHU Controller indoor touch panel. AIR2-HMI-20T for kindergartens, sports centers and more. Quick installation, and energy-saving functions. - [OJ-Air2WP55](https://ojelectronics.com/controllers-sensors/products/oj-air2wp55-ahu-controller/): Ventilation system with the OJ-Air2WP55 AHU controller panel. Integrated temperature control for a comfortable environment. - [OJ-RPT-20T](https://ojelectronics.com/controllers-sensors/products/touch-panel-room-control/): Touch Panel Room Control for advanced room control in offices, schools and airports. Ensuring comfort while reducing energy consumption! - [OJ-Zonemaster](https://ojelectronics.com/controllers-sensors/products/energy-efficient-room-control/): Energy-efficient room control for energy-optimized operation, comfort control, and compatibility with buildings using VAV dampers - [OJ-Zonemodule-A](https://ojelectronics.com/controllers-sensors/products/room-control-oj-zonemodule-a-constant-pressure/): Room Control for energy-optimized ventilation systems with constant pressure in supply ducts. Perfect for maintaining air quality. - [OJ-Zonemodule-M](https://ojelectronics.com/controllers-sensors/products/room-control-oj-zonemodule-m/): Room Control OJ-ZoneModule-M with direct Modbus VAV damper control, air quality detection, and automatic configuration - [OJ-Zonemodule-MP](https://ojelectronics.com/controllers-sensors/products/room-control-system/): Room Control System for energy-efficient air quality, optimal VAV damper operation in coordination with sensors and a touchscreen interface - [PT-1000-sensors](https://ojelectronics.com/controllers-sensors/products/pt-1000-hvac-temperature-sensors-all-purpose/): PT-1000 HVAC temperature sensors for ventilation systems. For precision, durability, and a wide temperature range for industry applications. - [PTH-3202-DF / PTH 3203-DF / PTH-3502-DF / PTH-3202 / PTH-3502](https://ojelectronics.com/controllers-sensors/products/pressure-transmitter/): Accurate pressure transmitters, including PTH-3202, PTH-3502 and 3502-DF models, for filter monitoring, fans, clean rooms, VAV applications - [PTH-3202-DR](https://ojelectronics.com/controllers-sensors/products/pressure-transmitter-field-installation/): Pressure Transmitter field installation with built-in relays - an excellent choice due to its versatility in handling various controller types - [PTH-6201 / PTH-6202 / PTH-6502 / PTH-6201-DF](https://ojelectronics.com/controllers-sensors/products/pressure-transmitter-modbus-rtu/): Pressure Transmitter Modbus RTU PTH-6x0x series for air handling units, ensuring accurate measurement and cost-effective installation - [PTH-6201-2 / PTH-6202-2 / PTH-6501-2](https://ojelectronics.com/controllers-sensors/products/pressure-transmitters-dual-input/): Pressure Transmitters Dual Input. Quick installation, efficient and cost-effective with dual-input for both factory and field installations - [TRD](https://ojelectronics.com/controllers-sensors/products/temperature-controller-trd/): Controls heating valves, electric heating batteries and heat recovery devices. - [TTH-6040-O](https://ojelectronics.com/controllers-sensors/products/outdoor-temperature-transmitter/): Outdoor Temperature Transmitter TTH-6040-O for temperature measurements. Optimal ventilation with integration to OJ Air2 and AHC-3000 systems - [TTH-6040-W](https://ojelectronics.com/controllers-sensors/products/room-temperature-transmitter-modbus-rtu/): Room Temperature Transmitter Modbus RTU for temperature measurement in connection with ventilation systems for energy savings - [TTH-6202](https://ojelectronics.com/controllers-sensors/products/duct-temperature-transmitter-tth-6202/): Duct temperature transmitter TTH-6202, for direct duct mounting in ventilation systems & fully compatible with OJ Air2 system - [VCH-1212-P](https://ojelectronics.com/controllers-sensors/products/ventilation-controllers-230v-vch-1212-p/): Ventilation Controllers 230V for energy-saving HVAC solutions, for apartment blocks and compliant with Eco design regulations. - [VCH-3202-DI / VCH-3202-DR / VCH-3212-DI / VCH-3222-DI / VCH-6201-DI](https://ojelectronics.com/controllers-sensors/products/efficient-ventilation-controllers-24v/): Efficient ventilation Controllers 24V (VCH) for rooftop fans and OJ-DV range of drives, for constant airflow. Easy installation. - [VCH-x20x-DI-menu](https://ojelectronics.com/controllers-sensors/products/vch-x20x-di-menu/): Menu structure - [VTH-6202 / VTH-6242](https://ojelectronics.com/controllers-sensors/products/air-quality-sensor/): Air quality sensor for demand-controlled ventilation in AHU and HVAC systems. Easy installation, Modbus compatibility and VOC Monitoring. ### Pages - [Controllers](https://ojelectronics.com/controllers-sensors/controllers/): Discover our range of advanced air handling unit controllers designed for optimal performance and seamless integration. AHU Controllers - [Compact Systems](https://ojelectronics.com/controllers-sensors/controllers/compact-systems/): AHC-3000 series, compact and efficient AHU Controllers for seamless control, with Bluetooth, Modbus, and intuitive touch operation options. - [Cloud solution](https://ojelectronics.com/controllers-sensors/controllers/cloud-solution/): Get OJ Air Cloud system for seamless monitoring of all your connected AHU and ventilation control systems. The future of HVAC technology! - [Modular and compact systems](https://ojelectronics.com/controllers-sensors/controllers/modular-and-compact-systems/): OJ Air2 complete control system control air handling units in various settings such as kindergartens and sports centers. - [Contact](https://ojelectronics.com/controllers-sensors/contact/): OJ Electronics HVAC Contact. Reach out to our global support team for technical support, and customer service for inquiries. - [wizard your order handling](https://ojelectronics.com/controllers-sensors/wizard-your-order-handling/) - [Sensors](https://ojelectronics.com/controllers-sensors/sensors/): AHU sensors, including pressure transmitters, humidity controllers, and temperature sensors for air handling in HVAC systems. - [Air Quality](https://ojelectronics.com/controllers-sensors/sensors/air-quality/): Air quality sensors for AHU systems - VTH-6202 & VTH-6242. High-performance readings with easy installation & minimal upkeep. - [Humidity](https://ojelectronics.com/controllers-sensors/sensors/humidity/): AHU humidity sensors for accurate measurement and control of air humidity in rooms and ventilation systems. HVAC control. - [Pressure](https://ojelectronics.com/controllers-sensors/sensors/pressure/): High-quality pressure transmitters and ventilation controllers, for advanced air handling unit applications in HVAC industries - [Temperature Sensors](https://ojelectronics.com/controllers-sensors/sensors/temperature-sensors/): Discover OJ Electronics' wide range of High-Quality and reliable AHU temperature sensors, designed for optimal performance in HVAC systems. - [Temperature Transmitters](https://ojelectronics.com/controllers-sensors/sensors/temperature-transmitters/): Wide range of Temperature transmitter HVAC sensors, designed to accurately measure temperature in ducts, outdoors, and rooms. - [Newsletter signup](https://ojelectronics.com/controllers-sensors/newsletter-signup/): Sign up for OJ Electronics' Know-How News newsletter to get product updates, event invitations and business inspiration. - [Miscellaneous](https://ojelectronics.com/controllers-sensors/misc/): Innovative AHU control solutions. High-quality products designed for easy installation, full connectivity, and energy efficiency. - [Temperature Controllers](https://ojelectronics.com/controllers-sensors/misc/temperature-controllers/): Our drives for fans are designed for ventilation solutions and are delivered pre-programmed and configured. - [Room Control](https://ojelectronics.com/controllers-sensors/misc/room-control/): HVAC Room Control System. Optimize air quality and temperature control in up to 125 individual rooms with easy installation. - [Power Controllers](https://ojelectronics.com/controllers-sensors/misc/power-controllers/): Power controllers HVAC AHU for providing AHU efficient temperature control for heating, ventilation, and underfloor heating systems - [wizard technical](https://ojelectronics.com/controllers-sensors/wizard-technical/) - [Support](https://ojelectronics.com/controllers-sensors/support/): HVAC Support OJ Electronics, all the support you need for OJ Electronics HVAC products, technical support, manuals, articles, and more - [wizard help](https://ojelectronics.com/controllers-sensors/wizard-help/) - [wizard request quotation](https://ojelectronics.com/controllers-sensors/wizard-request-quotation/) ## Drives [https://ojelectronics.com/drives/](https://ojelectronics.com/drives/): OJ Electronics designs dedicated variable speed drives for ventilation, compressor and heat recovery applications, built for OEM integration. ### Product categories - [Ventilation](https://ojelectronics.com/drives/product-cat/ventilation/): The OJ DV GEN II drives series is quick to install, simple to customize, easy to mount, and works in a wide-range condition. - [Drives](https://ojelectronics.com/drives/product-cat/ventilation/ventilation-drives/): OJ's ventilation drives include the OJ DV GEN II, its user-interface variant, and the Ultra-Low Harmonic OJ-DVULH drive. - [Accessories](https://ojelectronics.com/drives/product-cat/ventilation/ventilation-accessories/): Accessories for OJ ventilation drives, including remote and handheld user interfaces and a compact energy-renovation control unit. - [Energy Recovery](https://ojelectronics.com/drives/product-cat/energy-recovery/): OJ Electronics' energy recovery range covers DRHX drives and MRHX stepper motors for rotary heat exchangers, plus their accessories. - [Drives](https://ojelectronics.com/drives/product-cat/energy-recovery/energy-recovery-drives/): OJ-DRHX drives for rotary heat exchangers, from the RS-485/Analog and Modbus variants to the constant-speed model, in one category. - [Motors](https://ojelectronics.com/drives/product-cat/energy-recovery/energy-recovery-motors/): OJ-MRHX stepper motors pair with the OJ-DRHX controller for rotary heat exchangers, giving high starting torque and a smaller carbon footprint. - [Accessories](https://ojelectronics.com/drives/product-cat/energy-recovery/energy-recovery-accessories/): OJ-DRHX-PCTOOL is a service and engineering PC tool for controlling, monitoring and configuring OJ's energy recovery drives. - [Cooling & Heating](https://ojelectronics.com/drives/product-cat/cooling-heating/): OJ Electronics' cooling and heating range covers compressor drives and their accessories, built on proven OJ Drives technology. - [Drives](https://ojelectronics.com/drives/product-cat/cooling-heating/cooling-heating-drives/): OJ compressor drives for cooling, refrigeration and chillers, built on more than 25 years of ventilation drive experience with scroll compressors. - [Accessories](https://ojelectronics.com/drives/product-cat/cooling-heating/cooling-heating-accessories/): Accessories for OJ's cooling and heating drives, including a handheld touchscreen interface and interface extension cards for the range. - [Discontinued Products](https://ojelectronics.com/drives/product-cat/discontinued-products/): See OJ Electronics' discontinued drives, including earlier OJ DV variants and handheld terminals; documentation is still available. ### Products - [OJ DV GEN II](https://ojelectronics.com/drives/products/oj-dv-gen-2/): OJ DV GEN II is the upgraded dedicated drive for ventilation applications, keeping the same power variants, dimensions and protocols. - [OJ DV GEN II with User Interface](https://ojelectronics.com/drives/products/oj-dv-gen-2-with-local-user-interface/): Discover the next-level ventilation control with OJ DV GEN II Drives that come with a user-friendly interface. Improved response to alarms and suitable for a wide range of systems. Check out our prod… - [OJ-DA-RUI-20T-24M](https://ojelectronics.com/drives/products/oj-da-rui-20t-24m/): Equip your OJ GEN II Drives with the OJ-DA-RUI-20T-24M Remote User Interface for efficient monitoring, setup changes, and status overviews. Enjoy a user-friendly, 2" color touchscreen interface. - [OJ-DC](https://ojelectronics.com/drives/products/oj-dc-drives/): OJ-DC Drives for Scroll Compressors ensures optimal lubrication control and flawless performance regardless of variable loads or capacity. - [OJ-DRHX Constant speed](https://ojelectronics.com/drives/products/oj-drhx-constant-speed/): OJ-DRHX Constant Speed, designed for simplicity and efficient heat recovery in HVAC systems. Energy-efficient temperature control. - [OJ-DRHX RS-485 & Analog control](https://ojelectronics.com/drives/products/drhx-analog-control/): OJ-DRHX RS-485 & Analog Control system, incorporating advanced software, energy-efficient heat recovery, and precise temperature rotation. - [OJ-DRHX-Modbus control](https://ojelectronics.com/drives/products/oj-drhx-modbus-control/): OJ-DRHX-Modbus Control, efficient operation for rotary heat exchangers with software rotor monitor, and sensorless closed-loop control - [OJ-DRHX-Pctool](https://ojelectronics.com/drives/products/oj-drhx-pc-tool/): OJ-DRHX PC Tool helps control, monitor, and configure OJ DRHX products. Enhanced control capabilities with advanced access levels. - [OJ-Drives-Accessories](https://ojelectronics.com/drives/products/oj-drives-extension-cards/): OJ Drives Extension Cards and Accessories for HVAC system performance, including option and relay modules for seamless control and integration - [OJ-DV-HMI-35T](https://ojelectronics.com/drives/products/handheld-service-tool-oj-dv-hmi-35t/): Handheld Service Tool OJ-DV-HMI-35T designed for easy operation of OJ DV, OJ DVULH, and OJ DC drives. Discover more about its features - [OJ-DV-Pctool](https://ojelectronics.com/drives/products/oj-dv-pc-tool/): OJ-DV PC Tool, a versatile software solution for controlling, monitoring & configuring HVAC systems using OJ Electronics' advanced technology - [OJ-DVULH](https://ojelectronics.com/drives/products/ultra-low-harmonic-drive/): Ultra Low Harmonic drive, perfect for commercial HVAC applications with sensitive electronic equipment. Easy installation, and compact size - [OJ-MRHX](https://ojelectronics.com/drives/products/oj-mrhx-stepper-motor/): OJ-MRHX stepper motor for rotary heat exchangers. Even torque curve, energy-efficient, and silent performance in ventilation systems - [OJ-VCH-HMI3-6132](https://ojelectronics.com/drives/products/oj-dv-600v-drives-2/): OJ-DV-600V Drives series designed for up to 600V supply voltage, offering flexibility, and a wide range of applications for all fan systems ### Pages - [Contact](https://ojelectronics.com/drives/contact/): Contact OJ Electronics' Drives team in Sønderborg, Denmark for technical support, quotations and questions about our drive products. - [wizard your order handling](https://ojelectronics.com/drives/wizard-your-order-handling/) - [Newsletter signup](https://ojelectronics.com/drives/newsletter-signup/): Sign up for OJ Electronics' Know-How News newsletter to get product updates, event invitations and business inspiration. - [Customized Drives](https://ojelectronics.com/drives/customized-drives/): HVAC Fan Drives, dedicated for HVAC systems, including OJ DV GEN II, Ultra Low Harmonic Drives, and Retrofit solutions - [wizard technical](https://ojelectronics.com/drives/wizard-technical/) - [Support](https://ojelectronics.com/drives/support/): Get technical support, documentation and manuals for OJ Electronics drives, or contact our team directly for further assistance. - [wizard help](https://ojelectronics.com/drives/wizard-help/) - [wizard request quotation](https://ojelectronics.com/drives/wizard-request-quotation/) - [Heat Recovery](https://ojelectronics.com/drives/heat-recovery/): DRHX Rotary Heat Exchanger. Reliable, easy-to-install DRHX drives designed for optimum efficiency in any rotary heat exchanger system - [Cooling & Heating](https://ojelectronics.com/drives/cooling-heating/): Cooling & Heating – compressor drives designed for chillers and AHU, built on proven OJ Drives technology for reliability and energy efficiency - [Ventilation](https://ojelectronics.com/drives/ventilation/): HVAC Fan Drives, dedicated for HVAC systems, including OJ DV GEN II, Ultra Low Harmonic Drives, and Retrofit solutions ## Company - [Support](https://ojelectronics.com/support/): Find teknisk support, dokumentation, manualer og adgang til OJ Electronics' kundelogin for HVAC- og gulvvarmeprodukter her. - [Contact](https://ojelectronics.com/contact/): Need to get in touch? Find all contact information here. You are also always welcome at OJ Electronics. We are located in Denmark close to the motorway and only 3 kilometers from the airport. Estimat… - [Privacy Policy](https://ojelectronics.com/privacy/): Læs OJ Electronics' privatlivspolitik om, hvordan vi indsamler og behandler personoplysninger i overensstemmelse med GDPR. - [Cookie Policy](https://ojelectronics.com/cookie-policy/): Læs om, hvilke cookies OJ Electronics bruger på hjemmesiden, og hvordan du selv til enhver tid kan ændre dine cookie-indstillinger. - [Vulnerability Disclosure Policy](https://ojelectronics.com/vulnerability-disclosure-policy/): OJ Electronics har etableret en proces for indberetning og håndtering af sikkerhedssårbarheder i tråd med EU's Cyber Resilience Act. - [About OJ Electronics](https://ojelectronics.com/about-us/): OJ Electronics have been designing and developing electronic controls for underfloor heating and HVAC Controls & Drives. ## Company news - [OJ Electronics styrker både bundlinjen og arbejdspladsen](https://ojelectronics.com/press/oj-electronics-styrker-bade-bundlinjen-og-arbejdspladsen/): 2026-08-03 - [Datacentre driver vækst i Nordamerika for OJ Electronics](https://ojelectronics.com/press/datacentre-driver-vaekst-i-nordamerika-for-oj-electronics/): 2026-05-19 - [OJ Electronics investerer i nærværende ledelse for at øge agilitet og tempo](https://ojelectronics.com/press/oj-electronics-investerer-i-naervaerende-ledelse-for-at-oge-agilitet-og-tempo/): 2026-02-24 - [Med eksport til hele verden tiltrækker OJ Electronics ingeniører med globalt udsyn](https://ojelectronics.com/press/med-eksport-til-hele-verden-tiltraekker-oj-electronics-ingeniorer-med-globalt-udsyn/): 2026-01-06 - [OJ Electronics fastholder amerikanske vækstambitioner og jagter nye talenter](https://ojelectronics.com/press/oj-electronics-fastholder-amerikanske-vaekstambitioner-og-jagter-nye-talenter/): 2025-10-20 - [OJ Electronics fastholder en sund bundlinje og er gearet til fremtiden](https://ojelectronics.com/press/oj-electronics-fastholder-en-sund-bundlinje-og-er-gearet-til-fremtiden/): 2025-06-30 - [OJ Electronics’ nye adm. direktør evaluerer strategien – og fortsætter kursen mod at vinde den næste generation](https://ojelectronics.com/press/oj-electronics-nye-adm-direktor-evaluerer-strategien-og-fortsaetter-kursen-mod-at-vinde-den-naeste-generation/): 2024-11-27 - [OJ Electronics fortsætter vækstrejsen med tiltrædelsen af erfaren salgs- og marketingdirektør](https://ojelectronics.com/press/oj-electronics-fortsaetter-vaekstrejsen-med-tiltraedelsen-af-erfaren-salgs-og-marketingdirektor/): 2024-10-30 - [Stafetten gives videre til ny administrerende direktør hos OJ Electronics](https://ojelectronics.com/press/stafetten-gives-videre-til-ny-adm-direktor-hos-oj-electronics/): 2024-09-30 - [OJ Electronics byggede bro mellem studie- og arbejdslivet til Student Collaboration Day i Sønderborg](https://ojelectronics.com/press/oj-electronics-byggede-bro-mellem-studie-og-arbejdslivet-til-student-collaboration-day-i-sonderborg/): 2024-05-15 ## Career [https://ojelectronics.com/career/](https://ojelectronics.com/career/): Do you want to join us? Apply for an open position and get information about what you can expect when you join our recruitment process. ### Open positions - [Embedded software engineer – Drives](https://ojelectronics.com/career/job/embedded-software-engineer-drives/): OJ Electronics in Sønderborg is looking for an embedded software engineer to develop software for its variable speed drives. - [Embedded Software Engineer, Electric Floor Heating](https://ojelectronics.com/career/job/embedded-software-engineer-electric-floor-heating/): OJ Electronics in Sønderborg is looking for an embedded software engineer to develop firmware for its floor heating thermostats. - [Project Manager for Product Development focusing on software and scrum teams](https://ojelectronics.com/career/job/projektleder-til-produktudvikling-med-fokus-pa-software-og-scrumteams/): OJ Electronics in Sønderborg is looking for a Project Manager to lead software development and coordinate several scrum teams. - [Manufacturing Test Manager](https://ojelectronics.com/career/job/manufacturing-test-manager/): OJ Electronics i Sønderborg søger en Manufacturing Test Manager til at lede testafdelingen og udvikle teststrategi og testudstyr. - [Hardware Development Manager](https://ojelectronics.com/career/job/hardware-development-manager/): OJ Electronics in Sønderborg is looking for a Hardware Development Manager to lead a team of about 10 R&D specialists there. - [SØGES: Production Test Engineer](https://ojelectronics.com/career/job/soges-production-test-engineer/): OJ Electronics i Sønderborg søger en Production Test Engineer til PTA-afdelingen med ansvar for produktionstest og testudstyr. - [Internships](https://ojelectronics.com/career/job/internships/): OJ Electronics i Sønderborg tilbyder praktikpladser til studerende med obligatorisk praktik, men pladserne er aktuelt besat. - [Uopfordret](https://ojelectronics.com/career/job/uopfordret/): OJ Electronics i Sønderborg har ingen ledige stillinger lige nu, men du kan uploade en uopfordret ansøgning og dit CV her. - [Uopfordret – lager](https://ojelectronics.com/career/job/uopfordret-lager/): OJ Electronics i Sønderborg har ingen ledige stillinger på lageret lige nu, men modtager gerne en uopfordret ansøgning med truckcertifikat. - [Uopfordret – produktionen](https://ojelectronics.com/career/job/uopfordret-produktionen/): OJ Electronics i Sønderborg har ingen ledige stillinger i produktionen lige nu, men modtager gerne en uopfordret ansøgning og CV. ### Pages - [About working at OJ](https://ojelectronics.com/career/about-us/): OJ Electronics in Sønderborg has been a specialist in electronic controls since 1964 and is now part of the BITZER Group. - [Meet your colleagues](https://ojelectronics.com/career/meet-your-colleagues/): Meet the colleagues at OJ Electronics and discover what it means to join the OJ family of diverse, passionate people worldwide. - [Student/Trainee programme](https://ojelectronics.com/career/trainee-programme/): OJ Electronics in Sønderborg offers student and trainee positions in its R&D department with real, hands-on project experience. - [Contact HR](https://ojelectronics.com/career/contact/): Contact OJ Electronics' HR department in Sønderborg, led by HR Director Marianne Betzer, for job questions or applications. - [Your benefits](https://ojelectronics.com/career/benefits/): The most significant advantage of working and building your career at OJ Electronics is that you will be recognised and seen consistently. ## Optional - [Thermostats news: Smart codes. Fast answers.](https://ojelectronics.com/thermostats/news/smart-codes-fast-answers/): 2026-01-12 - [Thermostats news: Electric Underfloor Heating: A Magical Addition when Upgrading Air-heated Homes with Heat-pump Techno…](https://ojelectronics.com/thermostats/news/electric-underfloor-heating-upgrading-air-heated-homes-with-heat-pump-technology/): 2025-05-14 - [Thermostats news: Sophisticated Design. Simple in Use: The UTN5™ Thermostat](https://ojelectronics.com/thermostats/news/sophisticated-design-simple-in-use-the-utn5-thermostat/): 2024-11-14 - [Thermostats news: What We Do About Data Security (And Why You Should Care)](https://ojelectronics.com/thermostats/news/what-we-do-about-data-security/): 2024-04-28 - [Thermostats news: The Perfect Basis for Creative Innovation: Introducing Our NXT GEN Thermostat Platform](https://ojelectronics.com/thermostats/news/nxt-gen-thermostat-platform/): 2024-02-05 - [Thermostats news: New USG5™ Power Module](https://ojelectronics.com/thermostats/news/new-usg5-power-module/): 2024-01-30 - [Thermostats news: Programmable Schedule, New Display and More: Our New All-in-One DIN Rail Thermostat is Here](https://ojelectronics.com/thermostats/news/new-all-in-one-din-rail-thermostat-is-here/): 2024-01-22 - [Thermostats news: Introducing the UWG5™ WiFi LED Touch Thermostat: Reliable, Stylish and Easy-to-Install](https://ojelectronics.com/thermostats/news/uwg5-wifi-led-touch-thermostat-reliable-stylish-and-easy-to-install/): 2023-10-05 - [Thermostats news: How Smart Thermostats Can Help Your Customers Save Money and the Environment](https://ojelectronics.com/thermostats/news/how-smart-thermostats-can-help-your-customers-save-money-and-the-environment/): 2023-06-25 - [Thermostats news: Here Are 5 Reasons to Offer Your Customer Upgrading to the MCD3 Thermostat](https://ojelectronics.com/thermostats/news/5-reasons-to-offer-mcd3-thermostat/): 2023-05-02 - [Thermostats news: How Thermostats with Frames Compatibility Benefits Interior Designers and Architects](https://ojelectronics.com/thermostats/news/discover-thermostats-with-frame-compatibility-for-interior-designers-architects-oj-microline/): 2023-04-18 - [Thermostats news: How OJ Electronics Uses Transparency to Solidify Enduring Partnerships During Tough Times](https://ojelectronics.com/thermostats/news/how-oj-electronics-uses-transparency-to-solidify-enduring-partnerships-during-tough-times/): 2023-01-25 - [Thermostats news: MWD5-Voice thermostat: new variant with voice control](https://ojelectronics.com/thermostats/news/mwd5-voice-thermostats/): 2022-10-03 - [Thermostats news: User-interface update of UWG4™/UDG4 to ease setup](https://ojelectronics.com/thermostats/news/user-interface-update-of-uwg4-udg4-to-ease-setup/): 2022-05-16 - [Thermostats news: New MCD3 thermostat for future-proof floor heating](https://ojelectronics.com/thermostats/news/new-mcd3-thermostat-for-future-proof-floor-heating/): 2022-02-04 - [Discontinued: ACC-011](https://ojelectronics.com/thermostats/products/white-square-cover-mcx2/): The square front cover MCx2 fits our basic clock thermostats, and can be used in combination with various frames. - [Discontinued: ACC-013-E6, ACC-013-B5, ACC-013-D6](https://ojelectronics.com/thermostats/products/front-cover-for-occ4-ocd4/): Add a touch of elegance to your thermostats with our high-quality front cover OCx4. Available in pure white, aluminium and anthracite. Perfect fit for OCC4 / OCD4. - [Discontinued: ACG](https://ojelectronics.com/thermostats/products/acg/): Discover the benefits of the ACG Programmable Thermostat with built-in 15 mA EGFPD. Perfectly designed for electric underfloor heating control, energy-efficient, and easy to use. - [Discontinued: ATN](https://ojelectronics.com/thermostats/products/atn/): Experience optimal comfort with OJ Microline™ non-programmable thermostat for electrical underfloor heating. Simple interface, multi-voltage and easy installation for your practical homes and offices. - [Discontinued: EMR](https://ojelectronics.com/thermostats/products/emr-controller/): The discontinued EMR temperature controller uses 6 dip switches to select between several temperature control modes for hydronic heating. - [Discontinued: ETF-10M](https://ojelectronics.com/thermostats/products/floor-sensor-10m/): The ETF floor sensor is suitable for use with floor heating thermostats, for instance the DIN-Rail thermostat ETN4. The sensor is 10 metres long. - [Discontinued: ETN](https://ojelectronics.com/thermostats/products/etn/): ETN is an electronic thermostat with a built-in relay for switching heating cables, contactors, pumps, solenoid valves, fans etc. - [Discontinued: ETO-1550](https://ojelectronics.com/thermostats/products/eto-1550/): ETO-1550 is a thermostat for economical control of snow-melting systems in outdoor areas, gutters and down pipes. - [Discontinued: EZC](https://ojelectronics.com/thermostats/products/ezc-microcenter/): EZCThe EZC microcenter is recommended for control of underfloor heating in hydronic installations. The EZC microcenter is suitable for connecting multiple room thermostats and electric actuators (the… - [Discontinued: FMS](https://ojelectronics.com/thermostats/products/floor-management-system/): The discontinued FMS gateway module gave a full interface for local and remote monitoring of OJ Waterline floor heating, via LAN or Bluetooth. - [Discontinued: ICD3](https://ojelectronics.com/thermostats/products/clock-thermostat-icd3/): Explore the ICD3 Clock Thermostat, perfect for controlling electrical underfloor heating. Experience optimal comfort temperature with minimal energy consumption. This discontinued product features a… - [Discontinued: MCC2 / MCD2-UA](https://ojelectronics.com/thermostats/products/basic-clock-thermostat-mcc2-mcd2/): MCC2/MCD2 has built-in clock function and is provided 4-event program for automatic temperature control. - [Discontinued: MCD4-UA](https://ojelectronics.com/thermostats/products/clock-thermostat-mcc4-mcd4/): Discover the MCD4-UA Clock Thermostat from OJ Electronics - the perfect choice for electric underfloor heating, offering optimal comfort and ensuring maximum energy efficiency. - [Discontinued: MCS4](https://ojelectronics.com/thermostats/products/central-controller-mcs4/): Comfort System 4™ offers maximum comfort in all areas, from installation through operation to servicing. - [Discontinued: MDC-13](https://ojelectronics.com/thermostats/products/mdc-13/): MDC-13 is an elegant light dimmer with intuitive operation, in classic design. - [Discontinued: MSA4](https://ojelectronics.com/thermostats/products/panel-heater-controller-msa4/): CS4™ Panel Heater Controller features night setback, frost protection and floor sensing thermostat mode in a single unit. - [Discontinued: MSD4](https://ojelectronics.com/thermostats/products/thermostat-msd4/): Comfort System 4™ includes the thermostat MSD4. - [Discontinued: MSW4](https://ojelectronics.com/thermostats/products/gateway-msw4/): The OJ Microline™ Comfort System4™ with a Gateway solution is a simple and energy efficient way of ensuring comfort in your house. - [Discontinued: MTD3](https://ojelectronics.com/thermostats/products/digital-thermostat-mtd3/): Discover the discontinued MTD3 Basic Thermostat from OJ Electronics. Durable, energy-efficient, and user-friendly, designed to provide long-lasting heating comfort while minimizing the impact on the… - [Discontinued: MTD3-UA](https://ojelectronics.com/thermostats/products/mtd3/): This high-quality thermostat is designed to have a minimum of impact on the environment and will at the same time provide long-lasting heating comfort. - [Discontinued: MTU2 Hydronic](https://ojelectronics.com/thermostats/products/on-off-thermostat-mtu2-hydronic/): Type MTU2-FHH is an electronic on/off thermostat with control of temperature by means of an NTC sensor. - [Discontinued: MTx2-UA](https://ojelectronics.com/thermostats/products/basic-thermostat-mtc2-mtd2/): The discontinued MTx2-UA basic thermostat combines an ultra-thin design with an LCD display showing floor, room, or set-point temperature. - [Discontinued: OCC/OCD](https://ojelectronics.com/thermostats/products/occ-ocd/): The many setback functions of the thermostat makes it possible to control the comfort and setback temperature according to your own individual requirements. - [Discontinued: OCC2](https://ojelectronics.com/thermostats/products/clock-thermostat-occ2/): Experience optimal heating control with minimal power usage using OJ Electronics' OCC2 Basic Clock Thermostat. Comes with an intuitive display and a built in room sensor for enhanced comfort in your… - [Discontinued: OCC3](https://ojelectronics.com/thermostats/products/basic-clock-thermostat-occ3/): OCC3 has built-in clock function and is provided 4-event program for automatic temperature control. - [Discontinued: OCC4](https://ojelectronics.com/thermostats/products/clock-thermostat-occ4/): Discover OCC4, the all-in-one clock thermostat from OJ Electronics. Perfect for controlling electric underfloor heating with optimum comfort temperature & minimum energy consumption. - [Discontinued: OCD2](https://ojelectronics.com/thermostats/products/clock-thermostat-ocd2/): Discover OJ Electronics' energy-efficient OCD2 Basic Clock Thermostat with built-in room and floor sensors. Perfect for wooden floors, with features like temperature limitation and an adaptive functi… - [Discontinued: OCD3](https://ojelectronics.com/thermostats/products/basic-clock-thermostat-ocd3/): OCD3 has built-in clock function and is provided 4-event program for automatic temperature control. - [Discontinued: OCD4 Hydronic](https://ojelectronics.com/thermostats/products/clock-thermostat-ocd4-hydronic/): The discontinued OCD4 Hydronic clock thermostat controls temperature via an external or built-in floor sensor, with optional regulator mode. - [Discontinued: OCS4](https://ojelectronics.com/thermostats/products/ocs4/): Comfort System 4™ offers maximum comfort in all areas, from installation through operation to servicing. - [Discontinued: OSA4](https://ojelectronics.com/thermostats/products/panel-heater-controller-osa4/): CS4™ Panel Heater Controller features night setback, frost protection and floor sensing thermostat mode in a single unit. - [Discontinued: OSD4](https://ojelectronics.com/thermostats/products/thermostat-osd4/): Comfort System 4™ includes the thermostat OSD4. It ensures maximum comfort and minimum energy consumption for all floor heating applications. - [Discontinued: OTD2-1655](https://ojelectronics.com/thermostats/products/otd2-1655/): OJ Microline™ Thermostat with Wireless Infrared Sensor improves comfort by measuring the temperature of the floor surface using infrared light. - [Discontinued: OTN](https://ojelectronics.com/thermostats/products/on-off-thermostat-otn/): Explore OJ's OTN Thermostat, known for its reliability, functionality, and elegant design. Suitable for control of underfloor and electrical heating, reaching up to 3600W, 16A. Highly praised for its… - [Discontinued: OTN2 / OTD2](https://ojelectronics.com/thermostats/products/basic-thermostat-with-display-otn2-otd2/): Our ultra-thin thermostat with disply has state-of-the-art electronics inside and an attractive design outside: the perfect combination of form and function. - [Discontinued: OTN2-1666](https://ojelectronics.com/thermostats/products/infrared-thermostat-otn2/): OTN2 type thermostat with IR sensor is an optimal alternative for the traditional embedded floor sensor. - [Discontinued: UCCG](https://ojelectronics.com/thermostats/products/uccg/): Enhance your comfort with the UCCG thermostat by OJ Electronics. It offers efficient temperature control through an external or built-in sensor & has a built-in clock function for automatic comfort. - [Discontinued: UCDG](https://ojelectronics.com/thermostats/products/ucdg/): Discover the ETOP-4770 Snow Melt Controller, designed for methodical weather-based heating. Installation made simple with its quick setup and magnet-activated controls. Operates only when necessary,… - [Discontinued: UCG](https://ojelectronics.com/thermostats/products/ucg/): Discover OJ Electronics' UCG, an all-in-one programmable thermostat with built-in GFCI for efficient floor heating. Easy setup, energy monitor & multi-voltage output. Learn more! - [Discontinued: UTCG](https://ojelectronics.com/thermostats/products/utcg/): The thermostat is an electronic on/off thermostat for control of temperature by means of a sensor either placed externally or built into the thermostat. - [Discontinued: UTN](https://ojelectronics.com/thermostats/products/utn/): The discontinued UTN non-programmable thermostat with built-in GFCI offered a simple interface and multi-voltage support for heating. - [Discontinued: WLCT](https://ojelectronics.com/thermostats/products/wlct-clock-thermostat/): WLCT Clock ThermostatThe clock thermostat type WLCT is part of the underfloor heating system type WLM. The thermostat can be set to control one single room, or it can be - [Discontinued: WLCT3, WLDT3, WLTD3, WLTM3, WLTA3, WLRC3](https://ojelectronics.com/thermostats/products/wlm3-sensors-and-controllers/): The unique flexibility of the OJ Electronic design means that both hard wired and wireless sensors can be attached to the same system - [Discontinued: WLM](https://ojelectronics.com/thermostats/products/wlm-master/): The discontinued WLM controller connects multiple room thermostats and electric actuators for underfloor or radiator-based heating. - [Discontinued: WLM-AO](https://ojelectronics.com/thermostats/products/wlm-ao-add-on-module/): WLM-AO Add On Module can extend the control of rooms/zones. - [Discontinued: WLM2](https://ojelectronics.com/thermostats/products/wlm2-sensors-and-controllers/): The discontinued WLM2 room sensors and controllers gave the OJ Waterline system easy installation and flexible, efficient comfort. - [Discontinued: WLM2-BA](https://ojelectronics.com/thermostats/products/wlm2-masters-with-bms/): The discontinued WLM2-BA master supported Building Management Systems for commercial OJ Waterline installations needing central control. - [Discontinued: WLM2-FS](https://ojelectronics.com/thermostats/products/wlm2-master-module/): The discontinued WLM2-FS master module controls room heating and cooling in the OJ Waterline system, with optional humidity control. - [Discontinued: WLM3](https://ojelectronics.com/thermostats/products/wlm3-master/): WLM3 MasterThe OJ Waterline™ system ensures the best possible comfort and reduces energy consumption. The WLM3 has been developed as a temperature control system for room heating and cooling, integra… - [Discontinued: WLOC3 / WLRC3](https://ojelectronics.com/thermostats/products/wired-and-wireless-communication/): The discontinued WLOC3/WLRC3 universal master combines wired and wireless sensors in the same OJ Waterline hydronic heating system. - [Discontinued: WLRC](https://ojelectronics.com/thermostats/products/wlrc-receiver/): The WLRC-19 Receiver is connected to the master or the add on module. - [Controllers & Sensors news: OJ Launches Breakthrough Ventilation Controller – the OJ Air™ Plus](https://ojelectronics.com/controllers-sensors/oj-launches-breakthrough-ventilation-controller-the-oj-air-plus/): 2026-06-09 - [Controllers & Sensors news: Meet Us at Fiera Milano](https://ojelectronics.com/controllers-sensors/launch-oj-air-plus-at-mce-2026/): 2026-02-25 - [Controllers & Sensors news: Is it Better to Install AHU Controllers in the Field or in the Factory?](https://ojelectronics.com/controllers-sensors/ahu-controllers-field-or-factory/): 2025-09-26 - [Controllers & Sensors news: On Top of the New F-gas Rules? Here’s What They Mean for Integrating Heat Pumps Into Your A…](https://ojelectronics.com/controllers-sensors/new-f-gas-rules/): 2024-09-02 - [Controllers & Sensors news: Pros and Cons? Comparing Programmable and Configurable Controllers in Air Handling Units](https://ojelectronics.com/controllers-sensors/pros-and-cons-programmable-and-configurable-controllers/): 2024-03-04 - [Controllers & Sensors news: This Year’s News Are Unveiled at MCE 2024 in March](https://ojelectronics.com/controllers-sensors/mce-2024/): 2024-02-19 - [Controllers & Sensors news: Supporting Customers with Sustainable Declarations: The OJ Way through Environmental Transp…](https://ojelectronics.com/controllers-sensors/veltek/): 2023-05-22 - [Controllers & Sensors news: How OJ Electronics Helped Lucam Develop a High Air Quality and Energy-Efficient Ventilation…](https://ojelectronics.com/controllers-sensors/schoolvent-project/): 2023-04-10 - [Controllers & Sensors news: Power Up Your HVAC System at ISH Exhibition Frankfurt](https://ojelectronics.com/controllers-sensors/ish2023/): 2023-02-15 - [Controllers & Sensors news: How our new AHU control software update will make it easy to connect heat pumps](https://ojelectronics.com/controllers-sensors/ahu-control-software-update/): 2023-01-02 - [Controllers & Sensors news: Check out our News at Mostra Convegno in Milan](https://ojelectronics.com/controllers-sensors/mostra-convegno-2022-hvac/): 2022-05-24 - [Controllers & Sensors news: OJ Air2™ helps make buildings zero-carbon-ready](https://ojelectronics.com/controllers-sensors/mce-2022-oj-drives/): 2022-02-16 - [Controllers & Sensors news: Ventilation specialists chose OJ GreenZone™ for their own ventilation system](https://ojelectronics.com/controllers-sensors/oj-greenzone-ventilation-system/): 2022-01-10 - [Controllers & Sensors news: OJ Air2™ update improves AHU-systems and adds benefits](https://ojelectronics.com/controllers-sensors/oj-air2-update-ahu-systems-additional-benefits/): 2021-12-02 - [Controllers & Sensors news: Review of the UN’s Sustainable Development Goals reveals OJ Electronics’ contribution to su…](https://ojelectronics.com/controllers-sensors/sustainable-development-goals/): 2021-11-29 - [Discontinued: AHC-3000-B](https://ojelectronics.com/controllers-sensors/products/ahu-controller-ahc-3000-b/): Featuring Bluetooth connectivity, touch screens, and OJ Air Cloud management. This AHU Controller enhances your ventilation system. AHC-3000-B - [Discontinued: AHC-3000-S](https://ojelectronics.com/controllers-sensors/products/ahu-controller-ahc-3000-s/): HVAC system with AHC-3000-S, a pre-programmed compact AHU Controller featuring a 0-10V signal for two fans and touchscreen panel. - [Discontinued: EBST-5](https://ojelectronics.com/controllers-sensors/products/fire-alarm/): OJ Electronics is a global supplier of thermostats, power controls, HVAC supplies and much more - [Discontinued: EFK-20/21](https://ojelectronics.com/controllers-sensors/products/efk-20-21/): EFK-20/21 gives accurate electronic control of electric heating, including floor, overhead radiant heating and ventilation surfaces. - [Discontinued: EFS](https://ojelectronics.com/controllers-sensors/products/power-controllers-electric-heating-systems/): Power controllers electric heating systems for temperature control in electric heating systems like ventilation systems, and more - [Discontinued: EFST-6](https://ojelectronics.com/controllers-sensors/products/frost-alarm/): FST-6 is a series of frost alarms designed to protect against frost damage in, for example, the waterbased heating surfaces of ventilation plants. - [Discontinued: EFT](https://ojelectronics.com/controllers-sensors/products/eft-temperature-transmitter/): EFT is a complete series of temperature transmitters designed for temperature control and monitoring in heating and cooling systems. - [Discontinued: EHP](https://ojelectronics.com/controllers-sensors/products/humidity-controller-ehp/): High-quality EHP Humidity Controller for air humidity regulation based on signals from air humidity transducers, ensuring low lifecycle costs - [Discontinued: ESF-35](https://ojelectronics.com/controllers-sensors/products/ahu-airflow-sensors/): AHU Airflow Sensors perfect for your HVAC systems. Explore our products to ensure optimum performance & energy efficiency - [Discontinued: ETD](https://ojelectronics.com/controllers-sensors/products/differential-thermostat/): ETD is an electronic difference thermostat for ON/OFF control between a heating source and storage tank in solar and heat recovery systems. - [Discontinued: ETP-195x](https://ojelectronics.com/controllers-sensors/products/on-off/): ETP-195x Unitemp thermostats give On/Off regulation for cooling, heating and industrial installations needing accurate control. - [Discontinued: ETP-97](https://ojelectronics.com/controllers-sensors/products/universal-thermostat/): The ETP-97 thermostat is an allround On/Off thermostat for industrial use. - [Discontinued: ETT-2](https://ojelectronics.com/controllers-sensors/products/2-step-thermostat/): For on/off regulation of heating plants in two steps. Available for heating function 2 types cover a scale range from 0 to +110°C. Equipped with two SPST, 6A. - [Discontinued: ETZ-195x](https://ojelectronics.com/controllers-sensors/products/neutral-zone-thermostat/): ETZ-195x regulates cooling and heating plants from -30°C to +40°C, with a neutral zone adjustable from 0-10% around the set point. - [Discontinued: HTH-6122](https://ojelectronics.com/controllers-sensors/products/hth-6122/): HTH is a series of humidity transducers which are particularly suitable for measuring air humidity in rooms and ventilation systems. - [Discontinued: NTC 10k Sensors](https://ojelectronics.com/controllers-sensors/products/ntc10k-sensors/): ETF is a range of temperature sensors designed for use in heating, ventilation and cooling systems. - [Discontinued: OJ-Air2-HTERM](https://ojelectronics.com/controllers-sensors/products/oj-air2-hand-terminal/): The OJ-Air2Hterm is a user-friendly handheld terminal for operating an air handling unit and is used together with an OJ-Air2Master. - [Discontinued: OJ-Air2LON](https://ojelectronics.com/controllers-sensors/products/oj-air2-lon-gateway/): OJ Air2 LON Gateway is a discontinued RS-485 Modbus-to-LON converter for linking OJ Air2 to LonWorks building management systems. - [Discontinued: OJ-Air2LON-A](https://ojelectronics.com/controllers-sensors/products/oj-air2lon-a/): OJ-Air2LON-A is a discontinued LonWorks gateway for OJ Air2 air handling units; product documentation is still available here. - [Discontinued: OJ-LON](https://ojelectronics.com/controllers-sensors/products/oj-lon/): LON GatewayThe OJ-LON gateway provides connectivity for the OJ Electronics standard ventilation system, OJ Air™, to a LonWorks network. - [Discontinued: OJ-LON1](https://ojelectronics.com/controllers-sensors/products/oj-lon1/): The OJ-LON gateway provides connectivity for the OJ Electronics standard ventilation system, OJ Air, to a LonWorks network. - [Discontinued: PRH-1212](https://ojelectronics.com/controllers-sensors/products/prh-constant-pressure-controller/): PRH is a constant pressure controller primarily used for controlling fans through an analogue 0-10 V signal. - [Discontinued: PT 100 Sensors](https://ojelectronics.com/controllers-sensors/products/pt-100-sensors/): A range of temperature sensors for use in heating, ventilation and cooling systems. - [Discontinued: PTC 2k Sensors](https://ojelectronics.com/controllers-sensors/products/ptc2k-sensors/): A range of temperature sensors for used in heating, ventilation and cooling systems. - [Drives news: Major Ventilation Drive Software Release](https://ojelectronics.com/drives/news-ventilation/major-ventilation-drive-software-release/): 2026-04-01 - [Drives news: Meet Us at Fiera Milano](https://ojelectronics.com/drives/news/launch-oj-air-plus-at-mce-2026/): 2026-02-25 - [Drives news: OJ Electronics at AHR 2026](https://ojelectronics.com/drives/news/oj-electronics-at-ahr-2026/): 2026-01-13 - [Drives news: Updated OJ Compressor Drives are More Powerful Than Ever](https://ojelectronics.com/drives/news/updated-oj-compressor-drives-more-powerful-than-ever/): 2025-09-11 - [Drives news: Choosing the Right Pulley and Motor Size for Your Rotary Heat Exchanger](https://ojelectronics.com/drives/news/right-pulley-and-motor-size/): 2025-09-01 - [Drives news: Local and Remote User Interfaces for OJ Drives™](https://ojelectronics.com/drives/news/user-interfaces-oj-drives/): 2025-06-04 - [Drives news: OJ Electronics to Launch Drives for Scroll Compressors Plus Updates at ISH in Frankfurt](https://ojelectronics.com/drives/news/oj-ish2025-in-frankfurt/): 2025-02-19 - [Drives news: The Best Gets Better – DRHX Software Update](https://ojelectronics.com/drives/news/the-best-gets-better-drhx-software-update/): 2025-02-11 - [Drives news: DV Drives Now Power PMsynRM Motors](https://ojelectronics.com/drives/news/dv-drives-now-power-pmsynrm-motors/): 2025-01-13 - [Drives news: DV, DC and DRHX Drives and MRHX Motors Now Ignition-Protected](https://ojelectronics.com/drives/news/drives-and-motors-now-ignition-protected/): 2024-12-02 - [Drives news: Stepper Motors and the Genesis of OJ Electronics Drives](https://ojelectronics.com/drives/news/stepper-motors-and-the-genesis-of-oj-electronics-drives/): 2024-11-25 - [Drives news: Not Yet Using Rotary Heat Exchangers? Here’s Why You Should.](https://ojelectronics.com/drives/news/not-yet-using-rotary-heat-exchangers-heres-why-you-should/): 2024-10-29 - [Drives news: 30 Years of Drives Expertise](https://ojelectronics.com/drives/news/30-years-of-drives-expertise/): 2024-09-30 - [Drives news: This Year’s News Are Unveiled at MCE 2024 in March](https://ojelectronics.com/drives/news/mce-2024/): 2024-02-19 - [Drives news: The Benefits of Ultra-Low Harmonic Drives](https://ojelectronics.com/drives/news/the-benefits-of-ultra-low-harmonic-drives/): 2024-01-09 - [Discontinued: FC-HTERM](https://ojelectronics.com/drives/products/fc-hterm/): The FC handheld terminal sets up OJ-FC frequency converters, letting you adjust parameters to match the fan in your installation. - [Discontinued: FC-TOOL](https://ojelectronics.com/drives/products/fc-tool/): FC-TOOL is a hand terminal that communicates directly with OJ frequency converters via Modbus, storing two user configurations. - [Discontinued: FC-W](https://ojelectronics.com/drives/products/frequency-converter-fc-w/): OJ FC-W is a versatile frequency converter tailor-made for ventilation systems designed to be installed inside the air handling unit. - [Discontinued: OJ-Air2-EC](https://ojelectronics.com/drives/products/oj-air2-ec-controller/): OJ-Air2-EC sets new energy-efficiency standards for controlling PM motors in ventilation systems, meeting market and regulatory demands. - [Discontinued: OJ-DV](https://ojelectronics.com/drives/products/ventilation-drives-oj-dv/): Ventilation Drives OJ-DV dedicated for ventilation systems with energy efficiency, and BACnet MS/TP compatibility for building automation - [Discontinued: OJ-DV-600V](https://ojelectronics.com/drives/products/oj-dv-600v-drives/): OJ-DV-600V Drives series designed for up to 600V supply voltage, offering flexibility, and a wide range of applications for all fan systems - [Discontinued: OJ-DV-HTERM](https://ojelectronics.com/drives/products/oj-dv-hterm/): OJ-DV-HTERM is a handheld terminal for setting up and operating an OJ-DV drive, adapting parameters and reading current alarms. - [Discontinued: OJ-EC](https://ojelectronics.com/drives/products/oj-ec/): OJ Electronics has specialised in electronic controls for ventilation systems for many years. - [Discontinued: OJ-EC-HTERM](https://ojelectronics.com/drives/products/oj-ec-hterm/): OJ-EC-HTERM is a handheld terminal used to set operating and motor parameters for an OJ-EC Controller and as well to operate the EC controller. - [Discontinued: OJ-EC-TOOL](https://ojelectronics.com/drives/products/oj-ec-tool/): OJ-EC-Tool is a handheld terminal used to set and as well edit operating and motor parameters for an OJ-EC Controller - [Discontinued: OJ-FC](https://ojelectronics.com/drives/products/frequency-converter-fc/): OJ Air2 FC is a versatile frequency converter tailor-made for ventilation systems and is designed for direct mounting on standard AC motors. - [Discontinued: RHX2M](https://ojelectronics.com/drives/products/controller-for-rotary-heat-exchanger/): RHX2M is a Modbus-controlled speed drive for rotary heat exchangers, replacing traditional frequency converters and geared motors. - [Career news: Speaking out and being heard at OJ](https://ojelectronics.com/career/speaking-out-and-being-heard-at-oj/): 2026-06-24 - [Career news: A strong start at OJ Electronics](https://ojelectronics.com/career/a-strong-start-at-oj-electronics/): 2026-02-17 - [Career news: Innovation and what it means for OJ employees](https://ojelectronics.com/career/innovation/): 2025-11-03 - [Career news: OJ hits the sweet spot for employees worldwide](https://ojelectronics.com/career/oj-hits-the-sweet-spot-for-employees-worldwide/): 2025-06-23 - [Career news: A top-class Production Engineering department ensures manufacturing excellence at OJ Electronics](https://ojelectronics.com/career/a-top-class-production-engineering-department-ensures-manufacturing-excellence-at-oj-electronics/): 2025-03-26 - [Career news: The value of external perspectives](https://ojelectronics.com/career/the-value-of-external-perspectives/): 2024-11-19 - [Career news: My job is also my hobby. It’s great fun, even after 17 years](https://ojelectronics.com/career/my-job-is-also-my-hobby-its-great-fun-even-after-17-years/): 2024-06-18 - [Career news: A supportive work environment](https://ojelectronics.com/career/a-supportive-work-environment/): 2023-11-28 - [Career news: Sommerfesten, du ikke vil gå glip af!](https://ojelectronics.com/career/sommerfesten/): 2022-03-22 - [Career news: UI/UX designer](https://ojelectronics.com/career/ui-ux-designer/): 2021-03-02 - [Career news: Udadvendt elektronikfagtekniker](https://ojelectronics.com/career/udadvendt-elektronikfagtekniker/): 2021-02-26 - [Career news: Ambitious hardware engineer](https://ojelectronics.com/career/ambitious-hardware-engineer-2/): 2021-02-05 - [Career news: OJ is small enough for everyone to know everyone else, and big enough for everyone to be challenged every…](https://ojelectronics.com/career/oj-is-small-enough-for-everyone-to-know-everyone-else-and-big-enough-for-everyone-to-be-challenged-every-day/): 2021-01-27 - [Career news: Based in Sønderborg, but working globally](https://ojelectronics.com/career/based-in-sonderborg-but-working-globally/): 2021-01-27 - [Career news: Working from home brings benefits](https://ojelectronics.com/career/working-from-home-brings-benefits/): 2021-01-25