Air Pressure Switch Application HVAC Contact Form SPDT Electrical Connection Type Hardwired Electrical Rating 1/10 hp @ 120 to 277V AC 125 VA Pilot Duty @ 120V AC 28 VA Pilot Duty @ 24V AC Housing Material Plastic Housing Type Open Mounted Input Voltage 277V AC Maximum Differential Pressure Setting 0.09 in wc Maximum Operating Temperature 190 Degrees F Maximum Pressure Rating 14 in wc Maximum Pressure Setting 10 in wc Minimum Differential Pressure Setting 0.04 in wc