About product: [Clear Data Display]with detailed and big Datas , you will get the a clear date view; [Widely Used]Compatible with various interfaces , RA / RAVL / are all ok; [Child Lock] Children safety protection [Remote Control]A zigbee hub is needed for remote control , Support , Google Assistant Voice Control TUYA , Smart Life App Control [Time Schedule ]Programmable Schedule with Weekly Programming Selection, Supports manual set up 5+2, 6+1 and weekly schedule with 6 periods for option [Life Enjoy]Holiday mode, automatic mode, boost mode available , choose as you want [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 xAA 1.5V alkaline batteries(without battery) Maximum current: 90mA Working environment temperature: -10~60C Display accuracy: 0.5 Default range of temperature adjustment: 5~35C Probe sensor: NTC(10k)1% Range of temperature display: 1~70C Thread size: M30 x 1.5 Insulating condition: Normal environment Running program: Set per 1 week as a cycle Maximum route: 4.5mm size: 52 x 90mm Material: PC colour: white Package Contents: 1 x Smart Radiator Valve 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.