Air Sensing Switch, Application Energy Management, HVAC, Contact Form SPDT, Electrical Connection Type Hardwired, Electrical Rating 10 mA @ 5V DC, 15 A Non-Inductive to 277V AC, 300 VA Pilot Duty @ 115 to 277V AC, Housing Material Steel, Housing Type Conduit Box, Includes (2) Slip-On Tubing Adapters, Mounting Screws, Input Voltage 277V AC, Maximum Differential Pressure Setting 0.8 in wc, Maximum Operating Temperature 180 Degrees F, Maximum Pressure Setting 12 in wc