Product Features: 1.Smart Tuya ZigBee Radiator Actuator Thermostat:New mini design with simple and clear LCD&LED display screen on the body,the radiator thermostat is with LCD digital display screen and two sections of AA batteries powered,which is a special valve using cooperatively with heating radiator. 2. A ZigBee wireless hub is a must that connects to the valve many other ZigBee smart products and realizes the whole linkage of your smart home devices.Simply add your gateway to the App,then add your radiator actuator to your gateway in the App. 3.Programmable Schedule with Weekly Programming Selection:Supports manual set up 5+2,6+1 and weekly schedule with 6 periods for option,providing you with the maximum convenience for different situation and setting customized schedule for your house temperature.Holiday mode,automatic mode,boost mode available.Choose workday and rest day mode to meet your own mind. 4.Voice and Remote Control for the Tuya ZigBee Wireless Gateway:Supports App remote control via your smart phone,together with the hands-free voice control via Alexa and Google Assistant after successfully connecting your valve to Tuya /Smart Life App on the basis. 5.Open Window Detection:When room temperature suddenly drop into temp. threshold,valve will close for 15 minutes.After that,if the room temp. is still lower than temp. Threshold,it will keep this mode.Besides,it's easy to read digital display with Celsius temperature. Parameter: Power:2*AA 1.5V alkaline batteries(Not included in the package) Working Temperature: -10~40C Constant Temperature Toleranc: 0.7 Temperature Range: 5~30C Thread size:M30 x 1.5mm Size: 55.3 x 54 x 98.3 mm Material: PC colour: White Package Contents: 1 x Radiator Thermostat 1 Bag x Accessory Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.