Johnson Controls P70LA-42 20" SPST Dual Pressure Switch 100 PSI/100-450 PSI

The Johnson Controls P70LA-42 SPST Dual Pressure Switch is an essentialelement of the HVAC systems that controls and measures refrigerant pressures properly. This switch has a pressure rating of 100 to 450 PSI which ensures the switch functions as expected by maintaining pressure within a given range. It is used in systems of commercial refrigeration and air conditioning to avoid overpressure situations that can lead to equipment disfunction or poor performance. This is done by measuring the refrigerant pressure and then initiating actions such as compressor lock off or alarm when pressures go high or low. It offers dual-pressure that increases flexibility in that it can be used in various operational conditions.