Pressure Switch Differential 1.4 to 2.1 psi Range 1.5 to 15 psi Port Type 1-Port 1/4 in FNPT Contact Form 2-SPDT NEMA Rating 4 4X Actuation Type Diaphragm Action Standard Series L Factory On/Off Setting 90 Percent of Range AC Contact Rating 15A @ 125/250/480V DC Contact Rating 0.25A @ 250V 0.5A @ 125V