This thermostat is used to control the fan and can be set so the fan runs once the temperature goes above the set temperature and stops when the temperature drops below the set temperature.

IThe typical use is to place it in the same room as the heater. Once the room is hot, the thermostat runs the fan so the excess heat goes to the other rooms. Once the heat is turned off or if the room starts getting cold, the thermostat will stop the fan.