... high and low pressure protection of some refrigeration systems. The product pressure switch is used for the high and low pressure protection of ... It can also be used to pneumatic and hydraulic pressure control systems of all kinds of industrial and agricultural ... method: auto reset, manual reset2. Pressure range: extra-high (800 ~ 2,200PSI), high (145 ~ 700PSI), low (3 ~ 145PSI), vacuum (-7.4 ...