The Supco low pressure switch features a normally closed design with 1/4" female threads, allowing direct installation onto the refrigerant port on the low-pressure side. It activates by opening at 45 psig and resets by closing at 60 psig. Equipped with 1/4" male wire connectors, this switch serves as a reliable, brand-name replacement for Dometic models 4024200 and 290000193, as well as the Wilspec HS100-22-0002.
