Description
The Robertshaw 2374-500 SPST Air Pressure Sensing Switch 40F-190F responds to pressure variation within airflow and combustion circuits to regulate connected electrical processes during operation. In HVAC systems through a single-pole single-throw switching mechanism that changes electrical contact status when specified air pressure conditions are reached. The switch is positioned near airflow pathways and pressure-sensitive sections where operating pressure influences circuit activity and control response. Its pressure-responsive action maintains regulated switching performance, supports controlled airflow verification, and contributes to stable operating conditions during heating and ventilation cycles.
