Smart Home Thermostat Battery Powered Wall Hanging Furnace Programmable Smart Temperature Controller Item Type: Smart Thermostat Material: ABS Battery: 3 x AA Batteries (Not Included) Size: Approx. 86 x 86 x 30mm / 3.39 x 3.39 x 1.18in Power Consumption: <1W Proof Grade: IP20 Sensor: 3950, 10K Display: LCD Screen Temperature Control Accuracy: ±1°C/33.8°F Function: Controls wall hung boiler start and stop, or controls electric actuator (normally open NO, normally closed NC), or less than 600W water pump (Reminder, only one control can be selected, if connecting the water pump, the boiler cannot be connected). No need to groove the wall, the surfaces mounted thermostat is fixed. Easy to install, suitable for stronger applicability, suitable for old house renovations or other conditions limited installation. Weight: Approx. 195.00g / 6.88oz