Lennox 52M40 Pressure Switch Els PW 17895 Engineered specifically for Sensus 243-12-1

Engineered specifically for Sensus 243-12-1 and 243-12-2 service regulators

Superior Material Integrity: Resistant to chemical degradation from POE oils and common refrigerants

and this mount ensures your condenser fan runs smoothly

also identified in technical catalogs as the Watts KSTEM-12

Lennox 52M40 Pressure Switch Els PW 17895 Engineered specifically for Sensus 243-12-1As a field tested Lennox 52M40 Pressure Switch, this genuine OEM component is a critical safety interface for residential and commercial gas furnaces. Engineered for precise pneumatic monitoring, this SPST furnace pressure switch features a single pole single throw configuration designed to verify inducer motor performance. The integrated 1 4" barb connection allows for a secure, airtight fit with standard pressure tubing, ensuring the system