This socket plug thermostat is designed for different heating or cooling devices, such as electric wall heaters, oil heaters, fan heaters, radiant heaters, Air conditioner etc. According to the different request of the configuration, this socket plug thermostat can be WiFi Smart thermostat. Users can control the thermostat on smart phone via download Smart Home App.  Plug in thermostat is widely used in Homes, Residential buildings, Offices,Agriculture,  Breeding etc. Item No.: HT-04 7 days 4 periods programmable  Smart wifi remote control  Amazon Alexa and Google Assistant voice control  Child lock  Frost protection  Open window detection  External sensor(optional)  Zigbee (optional)  Bacnet protocal(Optional) UK, DE, FR, IT socket selectable