Note : Thermostatic Radiator Valve needs to be used with Zigbee Hub! Sart Control : SONOFF Zigbee thermostatic radiator valve has all the smart functions, including APP remote control, voice control, set schedule, group control, etc Open Window Detection :Automatically turns off the radiator when ventilating, helping to avoid unnecessary energy waste Zigbee 3.0 Standard Compatible : Supports Zigbee hubs using the Zigbee 3.0 protocol, and theoretically supports adding to any Zigbee hub developed in accordance with Zigbee 3.0 protocols. Such as SONOFF iHost, SONOFF NSPanel Pro, ZB Bridge Pro, ZBDongle-P and ZBDongle-E Compatible with Most Heating Manufacturers : Fits existing ‘M30 x 1.5mm’ radiator valves, and the valve adapters in the package are compatible with most heating systems and manufacturers Complete Functional : Child lock prevents children from mishandling the radiator. Frost protection makes sure pipes don’t freeze and burst, keeping your home safe. Support 6 months of historical data query, you can use data to provide ideas for starting heating earlier or later next time