Explosion Proof Pressure Switch, Range 10 to 100 psi, Process Connection 1/4 in MNPT, Housing Material 316 Stainless Steel, Wetted Materials 316 Stainless Steel Welded Diaphragm, Compatible With Air and Liquids, Electrical Connection 1/2 in MNPT Conduit Connector with 3-18 AWG 12 in Wire Leads, Contact Form SPDT, Circuit Type Not Applicable, AC Contact Rating 5A at 125/250V AC, DC Contact Rating 3A @ 28V DC Inductive, 5A @ 28V DC Resistive, NEMA Rating 7, 9, IP Rating 67