Air Sensing Switch Application - Contact Form SPDT Electrical Connection Type Hardwired Electrical Rating 300 VA Pilot Duty Housing Material Steel Housing Type Open Mounted Includes - Maximum Differential Pressure Setting 0.3 in wc Maximum Operating Temperature 180 Degrees F Maximum Pressure Rating 0.5 psi Maximum Pressure Setting 5 in wc Minimum Differential Pressure Setting 0.02 in wc Minimum Operating Temperature -40 Degrees F Minimum Pressure Setting 0.15 in wc