Differential Pressure Switch, Application Refrigeration, Air Compressor Control, Air Flow Control, Contact Form SPDT, Electrical Rating 15 A @ 125/250/480V AC Resistive, Housing Material Stainless Steel, Input Voltage 125V AC, 250V AC, 480V AC, Maximum Differential Pressure Setting 40 psi, Maximum Operating Temperature 160 Degrees F, Maximum Pressure Rating 180 psi, Maximum Pressure Setting 40 psi, Minimum Operating Temperature -40 Degrees F, Minimum Pressure Setting 0 psi