Differential Pressure Controller:Power: 24VAC, 1A, 50/60Hz, Degree range: 8 to 60PSI (55 to 414kPa), Operation differential pres Differential Pressure ControllerCharacteristics Single-pole, double-throw, totally enclosed non-snap acting switch1/4 in. flared tube pressure connecting on the sensing element permits easyfield installationCalibrated reading scale for quick set point ...