Air Sensing Switch, Application Furnace Control, Commercial HVAC, Residential HVAC, Contact Form SPDT, Electrical Connection Type Hardwired, Electrical Rating 1 A Pilot Duty, 5 A Non-Inductive to 277V AC, Housing Material , Housing Type Open Mounted, Includes -, Input Voltage 277V AC, Maximum Differential Pressure Setting 0.12 in wc, Maximum Operating Temperature 180 Degrees F, Maximum Pressure Setting 4 in wc, Minimum Differential Pressure Setting 0.07 in wc