Air Sensing Switch, Application Energy Management, HVAC, Contact Form SPDT, Electrical Connection Type Hardwired, Electrical Rating 1/2 A @ 125V DC, 1/2 hp @ 250V DC, 1/4 A @ 250V DC, 1/4 hp @ 125V AC, 15A @ 125/250/277V AC, Housing Material Steel, Housing Type Conduit Box, Includes (2) Slip-On Tubing Adapters, Mounting Screws, Input Voltage 480V AC, Maximum Differential Pressure Setting 0.8 in wc, Maximum Operating Temperature 180 Degrees F, Maximum Pressure Setting 12 in wc