Best Comet Dect 2025

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Last Updated - 09/06/2025

Best Choice

01

ET - EUROTRONIC Technology GmbH

Eurotronic Comet ZZ eco: 3x Smart ZigBee Radiator Thermostat ZigBee Wireless Heating Control Set Including Free App and Gateway

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9.7

Exceptional

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Main highlights

With practical comfort functions: the radiator controller impresses with a variety of smart functions: app control, ventilation detection, child lock and holiday function. Thanks to automatic summer/winter time adjustment, frost protection and valve protection, the thermostat is always ready to use.
Reliable and energy efficient: the Comet Zigbee thermostat helps you save up to 30% on heating costs. The highly stable and energy-efficient Zigbee wireless technology ensures high reliability and long battery life.
Quick and easy to install: the thermostat can be quickly and easily attached to your radiator valve thanks to the easy installation and the included adapter (compatible with Danfoss). So you can immediately benefit from the advantages of intelligent heating control.
Quality made in Germany - The Eurotronic radiator thermostats are produced in Germany and offer high quality at the best price.
If you have any questions or problems with the setup of the thermostats and gateway, please contact contronics customer service.
Heating very easy: With the intuitive app, you can control your heating like a professional. Create individual schedules and adjust the temperature according to your wishes.
Flexible gateway: The ZigBee Gateway connects easily to your router via Wi-Fi and can be placed anywhere. Thanks to NFC or WiFi, you can quickly and easily pair your smartphone with the gateway when setting up the system.

109,95 €
02

Eurotronic

Eurotronic Comet WiFi Radiator Thermostat Set - Smart Home Heating Control for 3 Radiators Includes Free App and Valve Adapter Voucher Compatible with Any WLAN Router (2.4 GHz)

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9.4

Excellent

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Main highlights

Tips for setup: the thermostat reset button is located in the battery compartment to the right of the lettering Reset. The button can be easily pressed with a ballpoint pen.
Tips for setup: When setting up app, disable mobile data on your smartphone and enable access to location (GPS).
Tips for setup: If you have increased the font size of your smartphone, please set the font back to the default value so that all controls of the app are displayed correctly.
The electronic radiator controller with illuminated LED display and touch operation offers you many intelligent functions for smooth use: app control, automatic window open detection, child lock, holiday mode, frost and limescale protection function as well as an automatic summer/winter time change.
Save up to 30% on heating costs this winter with the modern WLAN radiator thermostat Comet WiFi and experience comfortable heating control via app. You do not need additional centres or gateways.
Quality made in Germany - The Eurotronic Comet WiFi radiator thermostats are produced in Germany and offer high quality at the best price.
Mount the digital thermostat to your radiator valve in no time at all. The high-quality metal nut of the thermostat head fits all standard valves with the thread dimension M30 x 1.5 mm. Special adapters compatible with Danfoss RA, RAV and RAVL valves are included. If the thermostat still does not fit, please request free adapters for your valve manufacturer from contronics.
If you have any questions or problems when setting up the thermostats, please contact contronics customer service.
Easily create individual time profiles conveniently via your smartphone or tablet. The Eurotronic Smart Living app is available for free in the Apple App Store or Google Play. Instructions specially made for this solution are included with the package and help you set up.

106,56 €
Value for Money

03

AVM

FRITZ!DECT 302 (Intelligent Radiator Controller for the Home Network, for Energy Saving, for All Standard Radiator Valves and FRITZ!Box with DECT Base, FRITZ!OS from Version 6.83)

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16% Off
9.2

Excellent

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Main highlights

Smart radiator controller to save energy for the FRITZ!Box home network, automatic and precise control of the room or living temperature, ideal for creating an individual, efficient heating rhythm
Please note product dimensions and manufacturer's specifications for compatible heating models
Energy-efficient e-paper display and numerous convenience functions, such as frost protection, limescale protection or boost function, window on detection, button lock, push service, group switching and much more.
Easy installation and setup on all standard radiator valves with connection thread, additional adapter available, seamless combination with FRITZ!DECT 301 and FRITZ!DECT 300 possible
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 and FRITZ!OS from version 6.83, new features available via regular, free updates
Box contents: FRITZ!DECT 302, 3 x AA batteries (in device), installation instructions, adapter for Danfoss RA

57,90 € 69,00 €(16% Off off)
04

Eurotronic

Eurotronic 700083 Comet Plus Radiator Thermostat Electronic 8 to 28 °C

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12% Off
9.1

Excellent

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Main highlights

Valve-friendly thanks to Eurotronic valve protection
Save up to 30% on heating costs
Heating and saving times individually adjustable
Four heating times and four saving times are adjustable per day
8 heating periods programmable

55,00 € 62,99 €(12% Off off)
05

Eurotronic

Eurotronic Comet Plus Radiator Thermostat Set - Intelligent Heating Control for 4 Radiators Including PROGmatic Stick for Programming on PC

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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

Take advantage of the intelligent functions of the electronic radiator controller: automatic window open detection, holiday mode, frost and limescale protection function as well as automatic summer/winter time changeover.
Save up to 30% on heating costs this winter with the quiet Comet Plus heating thermostat and experience comfortable heating control without apps, clouds or Internet dependence.
Quality made in Germany - The Eurotronic Comet Plus radiator thermostats are produced in Germany and offer high quality at the best price.
Mount the digital thermostat to your radiator valve in no time at all. The high-quality metal nut of the thermostat head fits all standard valves with the thread dimension M30 x 1.5 mm. Special adapters compatible with Danfoss RA, RAV and RAVL valves are included.
Create individual time profiles directly on the programmable heating thermostat in just a few steps or using the included PROGmatic stick via your Windows PC or laptop. Instructions specially made for this solution are included with the package and help you set up.

99,95 €
06

AVM

AVM Fritz DECT 440 (Portable, Customisable Buttons for Operating Smart Home, Control Smart Fritz Devices, Compatible with the Fritz Box with DECT Base Station), White

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13% Off
8.9

Very Good

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Main highlights

Use in conjunction with Fritz! LED bulbs, Fritz! sockets and the Fritz! radiator control.
Handy design, portable or stationary use, easy wall mounting or magnetic wall mounting.
Convenient remote control of your smart home network via the four customisable buttons.
Control up to twelve devices or device groups conveniently via the high-resolution e-paper display.
Can be used with any Fritz!Box with a DECT base station or Fritz!Os from version 7.10 and connected via DECT ULE technology.

56,00 € 65,00 €(13% Off off)
07

AVM

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

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12% Off
8.8

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.

49,77 € 56,94 €(12% Off off)
08

BEOK CONTROLS

Beok Smart Thermostat Heater, WiFi Radiator Thermostat, Intelligent Heating Thermostat, Digital WiFi Heating Controller Compatible with Tuya App, Google Assistant & Alexa TRV-802WF

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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

WiFi function: you do not need to do anything else, download the Tuya Smart or Smart Life app to control the heating remotely. No need to buy other built-in devices to save money. Connect to your 2.4gzh network and enjoy the convenience of your smart home.
Voice control: Simply connect to Alexa and Google Home and control the thermostatic valve with your voice. You no longer need to turn on your mobile phone to adjust the temperature.
Intelligent descaling: the intelligent radiator thermostat routinely descales every Monday at 12:00 to avoid seasonal rusting of the valves due to long periods of non-use and extend the life of the valves. Protect the safety of your home heating
Daily programming: 6 programmable time slots for each day, you can set the exact temperature range for each day, which can meet your different heating needs every day.
Compatible fittings: The product comes with 6 radiator valve adapters for the models RA/RAV/RAVL/CAL/GIA/M28, which can be adapted to most of the valve fittings used in the home.

33,99 €
09

Olympia

IOIO HT 2000 Electronic Heating Thermostat | Save Heating Costs up to 30% | Made in Germany | Easy Installation | Radiator Thermostat | Radiator Heating Controller | Heating Thermostat

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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

Intelligent functions for more comfort: automatic summer and winter time adjustment, frost protection function, holiday function and window open detection make the thermostat an indispensable helper in everyday life.
High-quality workmanship, made in Germany: the sturdy housing material ASA and the extremely quiet operation guarantee durability. With the threaded connection M30 x 1.5, the thermostat fits many valve bases such as Heimeier, Danfoss and Honeywell.
Flexible temperature setting: flexibly adjust the temperatures for each switching cycle. With 4 adjustable heating and saving times as well as individual weekly programs for every day, you can optimise your energy consumption.
Energy-efficient heating cost control: Save up to 30% on heating costs with the IOIO HT 2000 energy-saving controller. The compact design and easy operation via the rotary wheel make it ideal for any home.
Child and valve protection: with the integrated child lock and valve protection, you ensure more safety. The snap-on closure and battery change indicator provide additional ease of use.

54,99 €
10

Homematic IP

Homematic IP Smart Home Radiator Thermostat – Basic, Digital, for Heater, Control via App, Alexa, Google Assistant, Easy Installation, Energy Savings, 153412A3

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14% Off
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

With the radiator thermostat – basic, you can save up to 33% on heating costs – thanks to individual temperature gradients with up to 13 changes per day in three adjustable heating profiles and in combination with window-on detection with a window and door contact
The setup and control of the thermostat via the free smartphone app and the toll free cloud service requires connection to the Homematic IP Access Point; this product is no longer compatible with the CCU2 central
Stand-alone operation (push-to-pair) allows direct learning of up to eight Homematic IP window and door contacts (HmIP-SWDM) and direct operation on the device.
Replaces conventional radiator thermostats in just a few simple steps - no intervention in the heating system or draining water is necessary
Ready for immediate use thanks to preset heating profile, which can be manually adjusted if required (individual temperature gradients with up to 13 changes per day).

29,95 € 34,90 €(14% Off off)