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Best Fritz Thermostat - Holiday Sale

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Last Updated - 18.12.2025

Best Choice

01

AVM

AVM FRITZ!WLAN Mesh Repeater 2400 (Dual-WLAN AC + N up to 1,733 MBit/s (5 GHz) + 600 MBit/s (2.4 GHz), 1 x Gigabit LAN, German Version

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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

WLAN mesh: automatically connects the Fritz products that you are using to an intelligent, optimum performance WiFi network; compatible with all common WiFi routers.
Ultra-fast gigabit LAN port for connecting a LAN bridge or network devices that don’t have a WiFi function. Supports IPv6 internet protocol.
More wireless coverage for all connected devices, ultra-fast wireless AC (1,733 Mbps) and highest wireless range with WLAN N (600 Mbps).
Easy one-touch WiFi set-up via WPS (WiFi protected set-up), factory-secure WiFi encryption.
Contents: FRITZ!Repeater 2400, LAN cable, installation instructions (English language not guaranteed), earthing contact adapter.

95,90 €
02

AVM

FRITZ! AVM DECT 440 (Portable and Configurable Switch for Managing All FRITZ! Smart Home Devices, Can be Used with FRITZ!Box with DECT Base)

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9.5

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

Stays sharp even during intensive use
Safety features:
Model number: 20003089
Includes additional tools or attachments
Equipped with features to protect the user
Compact storage

89,17 €
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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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

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
Note: FRITZ!DECT 302 becomes FRITZ!Smart Thermo 302: This is only a product rename. Technically the products are identical, only name and packaging design may vary.
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 to install and set up on all standard radiator valves with connection thread, additional adapter available, seamless combination with other FRITZ! radiator controllers. Please note product dimensions and manufacturer's specifications for compatible heating models.
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

50,01 €
Value for Money

04

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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9.2

Excellent

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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.

50,00 €
05

AVM

FRITZ!DECT 350 (Magnetic Door/Window Contact for Smart Home, Energy Efficient, DECT-ULE Sensor, Compatible with FRITZ!Box, Detects Open Doors/Windows, German Version)

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9.1

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 door and window contact that immediately detects as soon as doors or windows are opened, closed or tilted and triggers scenarios to save on heating and energy costs
Simply control and control via the FRITZ!App Smart Home, the FRITZ!Fon or the FRITZ!Box user interface
Quick installation thanks to the included adhesive strips, can be attached to or on the window or door frame as well as integration into the home network within a few minutes at the touch of a button
Perfect interaction with intelligent radiator controllers, such as the FRITZ!DECT 302, as well as the FRITZ!Box via the DECT-ULE sensor
Box contents: FRITZ!DECT 350 (consisting of sensor and magnet), quick start guide, 2 x AAA batteries, adhesive strip, reset needle

30,93 €
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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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

Ultra-long standby time - uses energy-saving wireless technologies that promise longer battery life
Room-by-room comfort - individually adjust the temperature to a perfect level in each room. Save your preferred setting for future use
Please note that this thermostat must work together with a hub, you must have KE100 KIT in advance
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
Intelligent heating and compatibility - the intelligent radiator thermostat is suitable for extending the digital control of your heating to additional rooms. Fits most existing radiator valves (M30 x 1.5mm) with the 3 supplied adapters that maximise compatibility
Easy installation - simply replace your old radiator valve with Kasa and follow the step-by-step instructions in the app for installation (English language not guaranteed). You can do all this yourself without any difficulty
Child lock - prevent children from accidentally operating your radiator.
Anywhere & anytime smart - control the temperature of your home from anywhere and anytime with the Kasa Smart app. Set schedules to automate your heating to suit your daily routines

33,00 €
07

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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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

With the Basic radiator thermostat, 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-open detection with a window and door detector.
Stand-alone operation (push-to-pair) allows direct learning of up to eight Homematic IP window and door detectors (HmIP-SWDM) and direct operation on the device.
Setup and control of the thermostat via the free smartphone app and the free cloud service requires connection to the Homematic IP Access Point. This product is no longer compatible with the CCU2 central unit.
Replaces conventional radiator thermostats in just a few simple steps – no intervention in the heating system or draining water is necessary.
Ready to use thanks to the preset heating profile, which can be manually adjusted if necessary (individual temperature gradients with up to 13 changes per day).

29,95 €
08

AVM

Fritz!Smart Energy 250 (Intelligent Current Sensor, Power Consumption Meter to Optimise Energy Costs, DECT Compatible with Fritz!Box, Energy Consumption via App or Fritz!OS)

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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

Intelligent power sensor for the FRITZ! home network to save and optimise energy
Ideal for reading, monitoring and evaluating the consumption data of a digital electricity meter
FRITZ!Smart Energy 250 is compatible with most digital electricity meters installed in Germany. Further information: fritz.com/service/current sensor
Easy to attach to the digital electricity meter by magnet, powered by batteries or USB port
Convenient monitoring in the FRITZ!App Smart Home, FRITZ!OS or MyFRITZ!Net of all essential data and savings potentials
Box contents: FRITZ!Smart Energy 250, 2x AA batteries (in device), installation instructions (English language not guaranteed)

82,99 €
09

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

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8.5

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

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.

29,75 €
10

Bosch

Bosch Smart Home Radiator Thermostat II [+M], Smart Thermostat, Flexible Use in Bosch Smart Home System or Cross-Manufacturers in Matte Systems, 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

Smart temperature control: heating thermostat ensures room-accurate and individually adjustable feel-good temperature, whose values are displayed in the app
Save energy: smart thermostat heats only according to individual needs and can be configured via time programs, heating schedules, scenarios and clever services to avoid unnecessary heating
Maximum added value in the system: a Bosch Smart Home controller is required for integration into the Bosch Smart Home system. The radiator thermostat II is not compatible with Bosch EasyControl
Flexible use: can be integrated with the Bosch Smart Home controller in the Bosch Smart Home system or without a controller in matte systems. Use can be selected during installation
Flexible control: operation of the heater directly on the device, via a room thermostat, remotely in the app, fully automated or possible by voice
Comfortable indoor climate: radiator thermostats of a room are combined into a room temperature in the Bosch Smart Home system and can be precisely controlled via the room thermostat

69,11 €