Features: 1. Smart Set: The smart wireless thermostats to extend your digital heating control to additional rooms that you can control independently via app. 2. Flexible control: Set the temperature on the radiator thermostat itself or via the app and voice commands via the Zigbees gateway. With the SmartLife/Tuya app, you can remotely control your smart radiator thermostat room by room or create a group to control them together. 3. High Compatibility: The practical thermostat set contains various adapters and can be attached vertically and horizontally to almost all radiators with thermostatic radiator valves. 4. Energy Saving: Heat your home with the heating plan only to the right temperature when needed to save energy and costs on your energy bill. With the window open detection, you can ventilate your home even easier. The smart radiator thermostat automatically interrupts the heating when windows or doors are open to avoid energy waste. 5. High Performances: Set it to an accuracy of 1 to maximise the comfort of your home. This smartlife radiator thermostat works with all valves with the thread dimensions M30 x 1.5 mm. Other functions include battery warning, temperature calibration, child safety, frost and limescale protection, etc. Specification: Product Color: White Product Size: 55 x 94mm Product Weight: 180g APP: SmartLife / Tuya Smart Temperature Sensor: NTC Wireless Protocol: Zigbee3.0 Frequency: 2.4 GHz Battery: 2 x AA Battery(LR6) Operating Temperature: -10 - 40 Temperature Range: 5 C to 60 C Temperature Display: 0 C - 60 C Connection Mode: M30 x 1.5mm Antifreeze: Yes Programmable: Yes Voice Control: Amazon Alexas, Googles Home Package Included: 1 x Smart Radiator Thermostat