Lennox 52M42 Auto Limit Switch 180-40F

The Lennox 52M42 Auto Limit Switch is an essential part of your heating and cooling system, It also serves as a safety guard in that it can control the temperature on its own. This automatic limit switch controls the temperature within your HVAC unit and has a shut off or turn on function when a certain limit is reached. It is flexible in heating and cooling with a range of 180°F to 40°F. The small size and low mass of the device (95g) allows it to be installed in most HVAC systems. This automatic limit switch is mainly used in furnaces, air handlers, and heat pumps.