Notice Tuya zigbe ZG253 supports Zigbee3 0 protocol and Tuya app Specifications Product Name Tuya Smart Thermostat Radiator ValveModel Tuya zigbe ZG253 Size Φ55×94 3 mmPower 2 pcs AA batteriesTemperature Range 5 30℃ correct to 0 5℃Threaded Connection M30 x 1 5 mm includes adapters for Danfoss RA RAV RAVL M28 Caleffi and Giacomini 6 adapters Working Temperature 10 50℃Working Humidity Up to 90 Features 1 Temperature Schedule Setting Customize temperature schedules for automatic heating control and energy efficiency 2 Window Open Detection Automatically detects open windows and adjusts the heating to save energy 3 App Remote Control Manage and control your thermostat from anywhere using the dedicated mobile app 4 Voice Control Compatible with Alexa and Google Assistance for hands free control Package Include 5 x Tuya zigbe Smart Thermostat Radiator Valve