Lennox 18M10 Limit Switch 318973-401 this unit is designed to

this unit is designed to handle a maximum inlet pressure of up to 60 PSIG while maintaining precise downstream control

Class 2 Certified: Inherently limited power source to protect downstream low voltage components

Angle Body Configuration: Designed for low pressure drop and efficient flow dynamics in tight equipment footprints

it can be tested with a heat lamp or heat gun without destructive failure

high-energy ignition in gas-fired HVAC equipment

Lennox 18M10 Limit Switch 318973-401 this unit is designed toThe Lennox 18M10 Limit Switch is a high precision safety control designed for critical thermal monitoring in residential and commercial furnaces. This L160 40F limit switch functions as an auto reset safety device, featuring a fixed opening temperature of 160F and a closing differential at 40F. Engineered with a single pole, double throw (SPDT) configuration, it offers versatile wiring options for complex heating circuits, ensuring the HVAC high limit