Differential Pressure Switch, Application HVAC, Pump Control, Contact Form SPDT, Electrical Connection Type Screw Terminals, Electrical Rating 0.25 A @ 125V DC Inductive, 0.5 A @ 125V DC Resistive, 1 mA @ 24V DC, 2 mA @ 12V DC, 3 A @ 30V DC Inductive, 5 A @ 125/250V AC Inductive, 5 A @ 125V AC Resistive, 5 A @ 30V DC Resistive, 5 mA @ 6V DC, Includes External Adjustment Knob, Input Voltage 125V AC, 125V DC, 12V DC, 24V DC, 250V AC, 30V DC, 6V DC, Maximum Operating Temperature 160 Degrees F