Pressure Switch, (1) Port, 1/2 in FNPT, SPDT, 30 to 500 psi, Standard Action, Mercoid, Mfr#: SA1113E-S5-K2

Pressure Switch, Differential 12 to 45 psi, Range 30 to 500 psi, Port Type 1-Port 1/2 in FNPT, Contact Form 1NO/1NC, NEMA Rating 4X, Actuation Type Diaphragm, Action Standard, Series SA1100, AC Contact Rating 15 A @ 125 V, 15 A @ 250 V, 15 A @ 480 V, DC Contact Rating 0.25 A @ 250 V, 0.5 A @ 125 V