Parameter: Power: 2*2 AA* 1.5V alkaline batteries Maximum current:90mA Working environment temperature::-10~60??C Display accuracy::0.5?? Default range of temperature adjustment:5~35??C Probe sensor::NTC(10k)1% Range of temperature display::1~70??C Thread size:M30*1.5 Insulating condition: Normal environment Size(mm): 52*90 Running program: Set per 1 week as a cycle Maximum route:4.5mm Product Features: 1.New mini design with simple and clear LCD display screen on the bodythe radiator thermostat is with LCD digital display screen and two sections of AA batteries poweredwhich is a special valve using cooperatively with heating radiator.Artificially set indoor temperature mainly used in the floor heating system to control the closing and opening of the pipe 2MQTT Setup Available. 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 Appthen add your radiator actuator to your gateway in the App. 3. Supports manual set up 5261 and 7 days 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 modeautomatic modeboost mode available.Choose workday and restday mode to meet your own mind. 4. Supports App remote control via your smart phonetogether with the hands-free voice control via Alexa and Google Assistant after successfully connecting your valve to Tuya /Smart Life App on the basis of one Tuya ZigBee Wireless Gateway. 5. When room temperature suddenly drop into temp. thresholdvalve will close for 15 minutes.After thatif the room temp. is still lower than temp. Thresholdit will keep this mode.Besidesit's easy to read digital display with Celsius temperature.