MARS 43304 Pressure Switch 321894-708 Versatile Switching: The SPDT relay

Versatile Switching: The SPDT relay with powered contacts simplifies wiring for both alarm and control functions

ensuring factory-spec performance and mounting

the 511-044-382 gas valve offers high-reliability performance and is cross-compatible with several legacy industry standard parts

The integrated spring return actuator provides reliable on/off control

How do I adjust the differential

MARS 43304 Pressure Switch 321894-708 Versatile Switching: The SPDT relayThe MARS 43304 Pressure Switch is a high performance SPST condenser fan cycling switch engineered for modern HVACR systems, specifically optimized for R410A applications. Operating on a close on rise logic, this switch features a factory set 225 PSI cut in and 150 PSI cut out (Open Fall), providing precise low ambient head pressure control. Designed for direct mounting via a 1 4 inch female flare S. A. E. connection with an integrated internal