This Smart WIFI Thermostat is designed for gas boiler & radiant floor heating system control. It is compatiable with differnet brand switch frames.        Item No.: HT-23W       Environmental ABS material      Attractive and Moden LED Touch Display      Multiple modes control(Manual,Economy and PRG. Mode)      Max. 3A for gas boiler or water radiant floor heating       7 days Programmable (4periods/day)      Clock display      86*86*17mm dimension      Over-heat protection      CE, ROHS approved      Tuya zigbee 3.0       External sensor supported