The Johnson Controls P70AB-2 Pressure Control is a vital component in HVAC and refrigeration systems. It's a pressure switch designed to monitor and regulate system pressures, ensuring safe and efficient operation. This control works by sensing changes in pressure within the system, such as refrigerant or air pressure. When the pressure reaches a pre-set threshold, the switch either o... https://partsfe.com/p70ab-2-johnson-controls-control-pressure-p70ab2