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The Potter Electric Signal PS-40-EX is an explosion-proof supervisory pressure switch for hazardous locations that provides hi-low pressure monitoring via two independently adjustable SPDT switches. It has a weatherproof cast aluminum enclosure with a brass pressure connection and is intended for air and water supply, dry pipe and wet sprinkler systems, and pressure tanks. Package contents include the PS-40-EX pressure switch and two SPDT contacts.
Explosion-proof hi-low supervisory pressure switch for sprinkler and pressure monitoring; weatherproof metal enclosure; includes two SPDT contacts.
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