White-Rodgers 3F01-130 HVAC Disc Thermostat Fan Control, Closes at 130°F, Opens at 115°F

3F01-130 White-Rodgers 3F01-130 Disc Thermostat Fan Control, Closes at 130°F, Opens at 115°F
This is an automatic reset snap disc fan control, typically used in HVAC systems to regulate fan or blower operation; it acts as a switch that closes (turns the fan on) when the temperature reaches 130°F and opens (turns the fan off) when the temperature drops to 115°F.