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Class 2 Certified: Inherently limited power source to protect downstream low voltage components
This unit features a 100% solid-state fused silicon pressure sensor and a 316L stainless steel monolithic cavity
it can be tested with a heat lamp or heat gun without destructive failure
the low pressure switch likely requires replacement
eliminating the need for multiple indicator types
Lennox 18M10 Limit Switch 318973-401 Class 2 Certified: Inherently limitedThe 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
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