The thermal switch can automatically control the on/off function of your fireplace blower fan. Can be used in universal blower kits, attaches easily and simple to replace.
TEMPERATURE RANGE: ON" AT 120℉ - Temp sensor will turn your fireplace blower fan "on" when it reaches 120 degrees Fahrenheit. "OFF" AT 90℉ - Magnetic heat sensor will turn your blower fan "off" when it reaches 90 degrees Fahrenheit.
WHEN USING AN OPTIONAL SPEED CONTROL: Simply set your preferred fan speed on the rheostat and leave it there. When the fireplace reaches 120℉ the blower will automatically turn on and run at the speed you set on your speed control.
REMINDING: Blower will not START until thermostat is heated to approximately 120 °F.