[ APP Remote Control ] -Download smart life /Tuya smart APP on your phone&Tablet to control the radiator thermostat valve anywhere/anytime. [ Hand Free Voice Control ] -Compatible with for amazon alexa echo, for google home ect ,a simply command to voice control the TRV. [ Programmable Weekly Schedule&Time Period ] -7day programmable weekly schedule ,4 time period/day can be setting on app. [ Family Share Function ] -You can share the TRV to your family with the limited right,create a smart home together with your family member. [ Linkage Function ] -It can linkage with other smart appliance in your home to create smart theme like leave home mode,back home mode,dinner mode,sleeping mode ect. [ Child Lock Function ]-Child Lock Function avoid kid`s operation on it. Make sure your home in smart and safe status. [ Group-Control Function ] -TRV can be set in group with valve in different room, realize group control function in special scene. APP:Smart Life/Tuya Smart Voice Control: for Amazon Alexa, for Google Home Frequency:2.4GHz Battery:2 * AA Alkaline Battery (LR6) Battery life:Half a Year Temeprature range:5℃-60℃ Temperature Display:0℃-60℃ Constant temperature tolerance:±1℃ Temperature Sensor:NTC Wireless Protocol:Zigbee 3.0 Connection:M30x1.5mm &M28&1.5 MAX travel:6mm Working temperature:-10℃- 40℃ Working environment:Indoor Anti-Froze:Yes Programmable:Yes Tuya Smart Thermostatic Radiator Valve TRV Adapters Great value for money, comes with 6 valve adapters Comes with 6 different types of valve adapters, suitable for 97% of the radiator valve interfaces on the market. Color: White Material: plastic Package Contents: 1 * Zigbee Gateway