MARS 39220 Limit Switch this unit is recalibrateable through

this unit is recalibrateable through a simple case adjustment

while the common lead is white with a yellow stripe

Combustion Safety: Provides a robust barrier against flue gas leakage

If you are dealing with a compressor burnout or a system where acid presence is suspected

MARS 39220 Limit Switch this unit is recalibrateable throughThe MARS 39220 Limit Switch is a versatile, high reliability solution for field service technicians needing an exact or universal replacement for furnace high limit applications. This adjustable snap disc thermostat features a temperature range of 135F to 175F with a fixed 40F differential, allowing for precise calibration to match specific internal plenum requirements. Designed as an open on rise safety device, the 39220 ensures the heating circuit