Air Pressure Switch, Application Industrial HVAC, Contact Form SPDT, Electrical Rating 10 A @ 125V AC, 125 VA Pilot Duty @ 125 to 250V AC, 5 A @ 250V AC, Housing Color Red, Housing Material Aluminum, Input Voltage 125V AC, 250V AC, Maximum Operating Temperature 140 Degrees F, Maximum Pressure Rating 1.26 psi, Maximum Pressure Setting 24 in wc, Minimum Operating Temperature -20 Degrees F, Minimum Pressure Setting 0.1 in wc, Mounting Hole Diameter 1/4 in, 5/16 in, Pressure Setpoint Type Adjustable