... 8 to 60PSI (55 to 414kPa), Operation differential pres Differential Pressure ControllerCharacteristics Single-pole, double-throw, totally ... reading scale for quick set point determinationPressure differential setting can be easily changed without ... the coverSimilar to Johnson P74JA floating differential pressure controlFunction ProductP74JA differential pressure controlPower24VAC, 1A, 50/60HzDegree ...