Pressure Control Switches: Type - Pressure Switch; Operator Type - Diaphragm; Pressure Media - Air, Water, Hydraulic Fluid; Circuit - SPDT 2-Circuit; Contact Rating - 120/240V 1/0.5A; Operating Range - 14-24 psi; Line Pressure - 150 psi Max; Occasional Surge - 500 psi Max; Enclosure Rating - Open; Connection - 1/8" NPT male; Additional Information - Factory Set: 15 psi. Bellow Material: Polyimide Film. Circuitry: N.O./N.C. SPDT (1 Circuit adjustable) Screw Terminals; Manufacturer Series - 5000 Series