This socket plug in thermostat is designed for different heating or cooling devices, such as electric wall heaters, oil heaters, fan heaters, radiant heaters, Air conditioner etc. Plug in thermostat is widely used in Homes, Residential buildings, Offices,Agriculture,  Breeding etc. Item No.: HT-04NP  Child lock  Frost protection  Open window detection  External sensor(optional)  Zigbee (optional)  Bacnet protocal(Optional) UK, DE, FR, IT socket selectable