Lennox 38M07 Auto Reset Limit Switch 135-165F

The Lennox 38M07 Auto Limit Switch is a safety control that is unique to Lennox HVAC equipment. It is limit control features a 3-inch insert length and is a normally closed switch. It has an essentialfunction of preventing dangerous operation since it turns off the system when the temperature reaches a certain level. This safety measure is useful in avoiding situations where the system gets to work for long and this causes the HVAC unit to damaged. Lennox designed the to be a normally closed switch which means the circuit is closed until the pre-set temperature is attained.