Best Dect Thermostat 2026

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Last Updated - 22.07.2026

Best Choice

01

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Optimal adaptation to weather conditions: The heating thermostat has a holiday function, frost and limescale protection function and automatic summer and winter time adjustment, which can efficiently save heating costs.
Individually programmable: settings can be made directly on the Comet Plus or with the PROGmatic programming stick (not included) on the PC. The Comet Plus is a purely electric thermostat (not a smart accessory).
Easy to use: The Comet Plus energy saving controller is easy to install and operate. It is valve-friendly thanks to the Eurotronic valve protection and also fits many other well-known radiator valves.
Box contents: Comet Plus energy-saving controller, instruction manual DE (other languages on request), 3 adapters (Danfoss RA, RAV, RAVL), 2 x AA Mignon batteries, dimensions: 65 x 54 x 85 mm, set of 4, colour: white
AUTOMATIC ROOM VENTILATION Thanks to the window open detection, the radiator thermostat detects directly when a room is being ventilated and closes the valve immediately to save energy.

75,90 €
02

FRITZ!

FRITZ! Smart Thermo 302, Intelligent Radiator Controller, Efficient Heating & High Convenience, Compatible with Standard Radiators, Comfortable Control via App & Display, Easy Setup

13% Off

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smart radiator controller for the FRITZ!Box home network, automatic and precise control of the room or living temperature, ideal for creating an individual, efficient heating rhythm
Energy-efficient e-paper display and numerous comfort functions, such as frost protection, limescale protection or boost function, window on detection, button lock, push service, group switching and much more
Easy to install and set up on all standard radiator valves with connection thread, additional adapter available
Control via PC, notebook, FRITZ!Fon, smartphone or tablet - even on the go via the Internet and via app, individual heating profiles can be programmed
Connection with FRITZ!Box at the touch of a button and convenient configuration via the FRITZ!Box user interface, for FRITZ!Box with DECT base, new features available via regular, free updates

59,99 € 69,00 €(13% Off off)
03

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Optimal adaptation to weather conditions: The heating thermostat has a holiday function, frost and limescale protection function and automatic summer and winter time adjustment, which can efficiently save heating costs.
Individually programmable: settings can be made directly on the Comet Plus or with the PROGmatic programming stick (not included) on the PC. The Comet Plus is a purely electric thermostat (not a smart accessory).
Easy to use: The Comet Plus energy saving controller is easy to install and operate. It is valve-friendly thanks to the Eurotronic valve protection and also fits many other well-known radiator valves.
Box contents: Comet Plus energy-saving controller, instruction manual DE (other languages on request), 3 adapters (Danfoss RA, RAV, RAVL), 2 x AA Mignon batteries, dimensions: 65 x 54 x 85 mm, colour: white
AUTOMATIC ROOM VENTILATION Thanks to the window open detection, the radiator thermostat detects directly when a room is being ventilated and closes the valve immediately to save energy.

16,93 €
04

FRITZ!

FRITZ! Smart Control 440 Portable DECT Button for Smart Home, Four Selectable Buttons & E-Paper Display, Light, Heating & More, Compatible with FRITZ!Box, No Bridge Required

28% Off

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Handy design, portable or stationary use, easy wall mounting or magnetic wall mount
FRITZ! DECT 440 & FRITZ!Smart Control 440 are technically identical: it is only a product renaming and the product packaging varies.
DECT instead of WLAN: long range, hardly susceptibility to interference and directly connected to the FRITZ!Box, without bridge or additional hardware
Convenient remote control for the smart home network using four configurable buttons, use in conjunction with FRITZ! sockets and FRITZ! radiator controller
Control up to twelve devices or groups of devices conveniently via the high-resolution e-paper display

49,99 € 69,00 €(28% Off off)
Value for Money

05

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Wifi, radiator thermostat, intelligent heating via WLAN, save heating costs, thermostat to regulate room temperature of the road, smart home accessories

29% Off

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smart's living: With the wireless thermostat you control your room temperature, etc. in the kitchen, children's, living room and bathroom conveniently integrable via every 2.4 GHz WLAN network - stable and without additional gateway into your SmartHome.
Save costs: The room thermostat for comfortable comfort, thanks to real-time behavior, transforms temperature changes immediately and transmits them while it has a particularly low battery consumption over comparable devices.
Perfect room temperature from the road: The intelligent temperature controller ensures a preheated apartment whenever you come home has a vacation function and accesses your individual heating profiles.
Note: It is important to download the software update in the app for your product.
Intuitive Operation: The heating controller in noble, modern design with LED display is compatible with any WLAN router, fits almost all radiator valves and can be easily controlled by app or via the sensor keys on the device.

28,49 € 39,99 €(29% Off off)
06

TP-Link

TP-Link Kasa KE100 Smart Radiator Thermostat, Accessory Product, Energy Saving, Schedule, Control on the Go via App, Alexa and Google Assistant, Hub Required, White, 56.6 x 56.5 x 83.93 mm

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile compatibility – Fits most radiator valve threads (M30x1.5) and the six included adapters (RA, RAV, RAVL, CAL, M28 and GIA) ensure more compatibility. -
Ultra-long standby time – Using the energy-saving wireless technologies that promise a longer battery life.
Smart anywhere and any time – Control the temperature of your home with the Kasa Smart App from anywhere and any time. Set schedules to automate your heating that matches your daily routines. Open window detection – KE100 can now work with Tapo T110. Please add Tapo T110 via the KH100 hub in the Kasa app.
Room-by-room comfort – Set the perfect temperature in each room individually. Save your preferred scenario for further use.
Please note that the Kasa KE100 can only be controlled via the Kasa app and not via the Tapo app. Tapo sensors (Tapo T110, Tapo T310, Tapo T315) can be set up in the Kasa app. Please add the Tapo sensors via the KH100 hub in the Kasa app. The Kasa KE100 kit only supports 2.4GHz WiFi, not 5GHz.
One for all – Each hub can connect and control up to 32 radiators, with the Kasa app you can combine and control all radiators. All rooms under control.
Matter certified – Users can connect the KE100 locally to Apple Home, Amazon Alexa, Google Home, Samsung SmartThings or other Matter-enabled smart home platforms. *Kasa Hub required. *Please update the Kasa app and KH100 firmware to the latest version. 1. Go to the KH100 Hub page in the app, then go to Device Settings > Mount to Matter to find Matter code. 2. Follow the Matter setup process to configure KH100. 3. All other Kasa Hub products, such as TRVs and sensors, are synchronised with third-party platforms.
Easy installation – Simply replace your old radiator valve with Kasa and follow the step-by-step instructions (English language not guaranteed) in the app for installation. You can do all this yourself without difficulty.
Child lock – Prevent children from accidentally operating your radiator.
Caution. Please note that this thermostat must work together with a hub, you must have KE100 KIT in advance. KE100 cannot work with the Tapo H100 and Tapo H200 hub, but only with the hub in the KE100 kit.

31,99 €
07

IOIO

IOIO HT 2000/23 Electronic Heating Thermostat | Save Heating Costs up to 30% | Easy Installation | Individually Programmable | Radiator Thermostat | Radiator Radiator Controller Pack of 5

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Save energy costs: the IOIO HT 2000/23 thermostat heater can save up to 30% on heating costs. Intelligent control and automatic adjustment of heating times ensure efficient use of heating energy.
Robust and quiet design: the compact, stable housing of the radiator thermostat fits many well-known valve bases. It runs extremely quiet and shows in time when the batteries need to be changed.
Intelligent functions: the heating thermostat detects open windows and automatically reduces the heat output. The frost protection function prevents the temperature from falling below a certain value to avoid damage to the heating system.
Individual programming: up to 9 heating and saving times can be set individually for each day. The automatic summer and winter time adjustment as well as a holiday function provide additional comfort and energy savings.
Easy installation and operation: the digital thermostat is quick and easy to install. With an intuitive dial and preset convenience and economy times, the desired temperature can be easily adjusted to save energy immediately.

49,99 €
08

FRITZ!

Avm Fritz!Dect 210 Intelligent Socket for Smart Home with Splash Protection IP 44 for Outdoor Use

13% Off

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Splash-proof (IP 44) and extended temperature range for outdoor use; energy consumption measurement.
Select on/off mode: single, daily, weekday, rhythmic, random, depending on the time of sunset and sunset or by Google calendar.
Intelligent smart home socket; automatic or manual on / off for connected devices (up to 3,450 W).
Controllable via FRITZ!Fon via DECT, via PC, smartphone or tablet via the user interface of the FRITZ!Box or MyFRITZ!app.
Box contents: FRITZ!DECT 210, German installation instructions, wireless range: up to 300 metres outdoors, and up to 40 metres in buildings.

34,99 € 39,99 €(13% Off off)
09

Bosch

Bosch Smart Home Radiator Thermostat II [+M], Smart Radiator Thermostat, Intelligent Heating & Energy Saving, with Matter, App Control, Compatible with Apple Home, Google Home & Alexa, Anthracite

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Provides maximum flexibility for your smart home: can be used with Controller II in the Bosch Smart Home System as well as in Apple Home, Amazon Alexa and Google Home or can be integrated directly into Matter systems.
Impressive installation and proven Bosch quality: assembly without installer in just a few minutes, reliable operation thanks to regular updates as well as frost and limescale protection.
Helps save energy and heating costs: Individual schedules and intelligent automations ensure that heating is only when it is really necessary.
Ensures the perfect feel-good temperature at any time: the heating thermostat controls the room temperature individually via app, voice or directly on the device - at home and on the go.
Automatically reacts to open windows: temperature drops are detected thanks to the smart thermostat and the heater pauses independently so that no energy is lost due to unnecessary heating.

58,76 €
10

SONOFF

SONOFF Smart Radiator Thermostat TRVZB, Smart Heating Thermostat with App Function, Zigbee Thermostat Requires Zigbee 3.0 Hub, Compatible with Amazon Alexa/Home Assistant

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Valve supports percentage opening: Supports opening ratios from 0% to 100%, with an accuracy of 1%. The aperture ratio can be used as an execution action for manual scenes and automatic scenes.
Smart control: SONOFF Zigbee radiator thermostat is equipped with a variety of intelligent functions, including ewelink app remote control, setting schedules, group control, query of historical data, etc.
Home-assistant compatible: Seamless integration with Home Assistant via Zigbee2MQTT and provides intelligent thermostat control, energy efficiency and convenience for effortless management of your home's heating system.
Historical data: Maximum support of 6 months of historical data query, you know the daily/weekly/monthly heating consumption by querying the usage history.
Compatible with most valves: The TRVZB radiator thermostat fits existing M30 x 1.5 mm radiator valves and can be mounted directly or with our adapters on most radiator valves. (Adapter RA/RAV/RAVL/CAL/GIA/M28 are included). Please note: requires use with a Zigebee 3.0 hub. Supports SONOFF ZBDongle-P, ZBongle-E, ZBBridge Pro, NSPanel Pro, ihost.

29,07 €