Digital controllers

Digital controllers have unique features allowing you to reduce energy waste. Equipped with temperature and moisture sensors, control modes, and special functions, they ensure accurate temperature settings, reducing energy consumption costs by up to 40 percent.

The DEVIreg™ 850 / ECtemp™ 850 is fully automatic, with temperature and moisture sensors for when ice and snow melts on grounds, such as pavements, roads, and ramps as well as for roof, gutter, gutter valleys and down pipes.

DEVIreg™ 850 / ECtemp 850

The DEVIreg™ 850 / ECtemp 850 version IV is an advanced thermostat with an LED display used for outdoor ground or roof applications. The sensors provide information about both moisture level and temperature, resulting in optimal control of the heating system.
The controller can handle up to 2 independent areas.

In the dual / combination systems it is possible to prioritize between the zones, e.g. if only a limited power output is available.

Applications:
• Roofs, gutters, downpipes, drain lines
• Ground, walkways, outdoor steps
• Road/concrete asphalt
• Mastic asphalt

DEVIreg™ Multi

DEVIreg™ Multi is 7 channel electronic programmable controller to be installed on DIN rail. Every channel can be individually set up with three control modes—with temperature sensor, time proportional power regulation without sensor, and manually on/off with time limitation. Сhannel inputs can be selected via software between 8 types of temperature sensors including NTC 15 kOhm at 25°C. Modbus RS485 opto-insulated serial interface gives the possibility for BMS control.

DEVIreg™ Multi

Features and benefits using outdoor digital controllers

Single, combination or dual zones

Up to 4 sensors

Moisture and temperature sensing

Alarm function

Efficient control snow removal

Up to 40% Energy saving

Automatic ”Around the Clock” snow clearing service

Related products

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Heating Cables

Outdoor heating cables are used for efficient snow removal and ice prevention. They provide safety for people, buildings, and the environment. It is a sustainable solution for a green and clean future through low energy consumption during the frost period.
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Self-limiting cables

Self-limiting heating cables are designed with a temperature-dependent resistant element between two parallel copper bus wires. When the bus wires are connected to the mains, a current goes through the temperature-dependent resistant element which will then heat.
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Heating Mats

The outdoor heating mats are designed for melting ice and snow and may be installed into special mastic for ground, grass and asphalt constructions. Mats are available in different lengths for two power supply options—230 and 400 V.

Accessories

Relevant accessories

Find relevant accessories by following this link

Accessories in Product Store

Videos

Snow melting and De-Icing solutions from Danfoss

Durably-designed Danfoss snow melting and de-icing products provide a permanent solution for safety in winter weather.

Electric heating videos on YouTube

You can see all our videos about Electric Heating on a dedicated playlist on YouTube. Follow the link below.

Go to the Electric Heating playlist on YouTube

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Application guide	Danfoss Ground application. Ice & Snow Melting Application manual	English	Multiple	11 Nov, 2020	7.5 MB	.pdf
Catalog	Danfoss Product catalogue	English	Multiple		20.8 MB	.pdf
Application guide	Danfoss Roof application. Frost protection Application manual	English	Multiple	06 Sep, 2022	14.4 MB	.pdf
Application guide	DEVI Ground Application manual	Swedish	Sweden	22 Jun, 2022	8.3 MB	.pdf
Application guide	DEVI Ground Application manual	Lithuanian	Multiple	29 Nov, 2019	8.2 MB	.pdf
Application guide	DEVI Ground Application manual	Russian	Kazakhstan	14 Sep, 2020	8.3 MB	.pdf
Application guide	DEVI Ground Application manual	English	Multiple	25 Oct, 2016	10.2 MB	.pdf
Application guide	DEVI Ground Application manual	Danish	Denmark	03 Jun, 2021	2.7 MB	.pdf
Catalog	DEVI Product Catalogue	Finnish	Finland	24 Jun, 2025	13.8 MB	.pdf
Catalog	DEVI Product Catalogue	Italian	Italy	13 Jun, 2025	29.3 MB	.pdf
Catalog	DEVI Product Catalogue	English	Multiple	09 Apr, 2025	29.5 MB	.pdf
Catalog	DEVI Product Catalogue	Norwegian Bokmål	Norway	28 Jun, 2022	13.6 MB	.pdf
Catalog	DEVI Product Catalogue	Ukrainian	Ukraine	16 Jan, 2025	13.0 MB	.pdf
Catalog	DEVI Product Catalogue	German	Austria	20 Jan, 2025	6.0 MB	.pdf
Application guide	DEVI Roofs Application manual	Swedish	Sweden	26 Feb, 2021	15.0 MB	.pdf
Application guide	DEVI Roofs Application manual	Danish	Denmark	03 Jun, 2021	3.5 MB	.pdf
Application guide	DEVI Roofs Application manual	Russian	Kazakhstan	15 Sep, 2020	14.8 MB	.pdf
Application guide	DEVI Roofs Application manual	Ukrainian	Ukraine	15 Sep, 2020	14.9 MB	.pdf
Application guide	DEVI Roofs Application manual	English	Multiple	06 Sep, 2022	14.9 MB	.pdf
Data sheet	DEVIreg 850	German	Multiple	19 Mar, 2021	545.9 KB	.pdf
Data sheet	DEVIreg™ 850	Czech	Czech Republic	30 Oct, 2015	200.4 KB	.pdf
Data sheet	DEVIreg™ 850	Romanian, Moldavian, Moldovan	Romania	16 Feb, 2016	200.1 KB	.pdf
Data sheet	DEVIreg™ 850	English	Multiple	27 Mar, 2025	613.3 KB	.pdf
Data sheet	DEVIreg™ 850	Danish	Denmark	19 Oct, 2022	589.3 KB	.pdf
Data sheet	DEVIreg™ 850	Ukrainian	Ukraine	24 Dec, 2021	98.6 KB	.pdf
Data sheet	DEVIreg™ 850 IV	French	France	03 Oct, 2024	611.0 KB	.pdf
Data sheet	DEVIreg™ Multi	Ukrainian	Ukraine	24 Dec, 2021	70.5 KB	.pdf
Data sheet	DEVIreg™ Multi - Data sheet	Finnish	Finland	02 Sep, 2020	518.1 KB	.pdf
Data sheet	DEVIreg™ Multi Data sheet	Norwegian Bokmål	Norway	20 Feb, 2025	215.5 KB	.pdf
Data sheet	DEVIreg™ Multi Data sheet	English	Multiple	27 Mar, 2025	316.7 KB	.pdf
Data sheet	DEVIreg™ Multi Data sheet	French	France	03 Oct, 2024	314.1 KB	.pdf
Data sheet	ECtemp 850	English	Multiple	17 Jul, 2023	798.2 KB	.pdf
Data sheet	ECtemp 850 (EFIT 850)	German	Austria	09 Jul, 2019	4.0 MB	.pdf
Data sheet	ECtemp 850 IV	French	France	04 Oct, 2024	796.0 KB	.pdf
Application guide	Наземне застосування. Танення льоду та снігу	Ukrainian	Ukraine	14 Sep, 2020	8.3 MB	.pdf

Tools and apps

EH Plugin for AutoCAD

The Plugin supports your engineering and design journey by making your work faster due to simple functionalities in calculating all lengths, dimensions and product data of cables and mats. It covers all applications within Electric Heating projects: Electric floor heating, Ice & Snow melting systems, Pipe tracing, Cold stores, Sport fields, Vineyards etc.
By utilizing Plugin, you will reduce design time for the project, provide all necessary information for installers in HTML/PDF format: BoM, resistance value check list, warranty list format. It means all project information can be consolidated in one file.

Plugin can be used with AutoCAD 2017-2023.

Warranty

At Danfoss, it is important for us to deliver high-quality products with long-lasting effects. Should you, against all expectations, experience a problem with your product, Danfoss offers a warranty for electric heating products valid from the date of purchase that was no later than 2 years from production date.

Depending on the product, the product guarantee is valid for two years, five years, or twenty years.

Product warranty covers costs for:

product replacement with a new comparable product or repair of the product
transportation costs

Warranty terms

Case stories

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Electric heating systems for the conservation of old castles

The Örebro Castle is a medieval castle fortification situated in the scenic region of Närke, Sweden. The castle lies on an island by the river Svartån. The oldest part of the castle, a defense tower, was erected in the latter half of the 13th century, but its present appearance, the Örebro Castle, was constructed over the last century. Since 1935, the castle has been a national Swedish monument.
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Electric heating ensures safety along the asphalt driveway, Ankara, Turkey

Protocol Road, the longest asphalt driveway equipped with electric heating, is located in North Ankara, Turkey. The electric heating was installed along this 3.3 km 2-direction (3 lanes each) road connecting Ankara city center and the airport.
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Electric heating chosen to protect 18th-century baroque palace in Kyiv

Designed by Bartolomeo Rastrelli in the second half of the 18th-century, Mariinskyi Palace is the official ceremonial residence of the President of Ukraine and used for hosting other heads of state. Electric heating was chosen as a sustainable modern technology to protect the historical landmark during its reconstruction.
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Remarkable solution for Remarkables Ski Field Queenstown, New Zealand

The Remarkables Ski Field is one of New Zealand's premier ski fields, located at a longitude of 45.05 degrees South, elevation 1,586 m, and situated near the North end of the Remarkables range. The base building has approximately 2,500 m² of heated outdoor patio at a density of 200 W/m². The heating of the patio matches the needs and requirements to prevent the surface accumulation of ice in a modern and highly efficient way.

Related applications

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Agriculture

Farmers need agricultural machines that deliver the same high productivity every season. Hydraulic solutions from Danfoss ensure world-class performance from each machine, and a comfortable, stress-free working environment for their operators.
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Electric heating frost and snow protection system used in application in pavement

Ice and snow melting systems are used in various applications in parking lots, garages, stairs, pavements, and other ground-level surfaces. They secure personal safety in hazardous winter conditions. Our systems can be installed on roofs, in gutters, pavements, and many more areas in and around the house. There is a wide range of products available such as cables or heating mats, specialized controllers, and mounting accessories. And you can count on us for knowledgeable support and service.
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Frost and snow protection

During winter time it can be hazardous to access commercial or public buildings. Snow covered parking lots, garage ramps, stairs and pavements need to be cleaned to allow visitors safe access. Danfoss offers highly effective frost and snow protection systems including all necessary products such as electric heating cables or mats, controllers, sensors and mounting accessories.