Fan Thermostat (Radiator Switch)

Radiator fan Thermostat Switches. They perform the function of switching ON/OFF the radiator fan for optimum efficiency of the vehicle. When the engine is cold, they keep the radiator fan switched OFF, while when the engine gets hot, they switch the radiator fan ON for cooling. They are generally Bimetallic / PTC types.

ECT Switches, these perform the dual function of a Radiator Fan thermostat switch as well as temp. Sensor. They are applicable vehicles having a computer aided engine.