heat pump micro pressure switch

The pressure control is used for high and low pressure protection of some refrigeration systems, residential, commercial system.
The pressure control is used for the high and low pressure protection of some refrigeration
systems such as residential, commercial and automobile air-conditioners and ice
makers, air compressors, and water heaters. It can also be used to pneumatic and
hydraulic pressure control systems of all kinds of industrial and agricultural HVAC
machines.
Type descriptions (types classified by):
1. Reset method: auto reset, manual reset
2. Pressure range: extra-high (800 ~ 2,200PSI), high (145 ~ 700PSI), low (3 ~
145PSI), vacuum (-7.4 ~ 0PSI)
3. Electrical control method: SPST (two wires), SPDT (three wires)
4. Fitting structure: copper tube welding, copper flare fitting
5. Connection: cartridge (terminal), wiring