Air Pressure Switch Application HVAC Contact Form SPDT Electrical Connection Type Screw Terminals Electrical Rating 1.5 A/0.4 A @ 250V AC Housing Material Thermoplastic Housing Type Standard Housing IP Rating IP54 Input Voltage 250V AC Maximum Differential Pressure Setting 1.4 in wc Maximum Operating Temperature 185 Degrees F Maximum Pressure Rating 40 in wc Maximum Pressure Setting 20 in wc Minimum Differential Pressure Setting 1 in wc Minimum Operating Temperature -4 Degrees F