The pressure switch is designed to control the switching on and off of the compressor depending on the pressure in the receiver. Screws into the receiver port. For a set of two compressors, one pressure switch is sufficient. The pressure relay is low-current, it can only be used in conjunction with a power relay. The pressure relay must turn on the power relay, and the power one must turn on the compressor. As a power relay, you can use a Gazelle starter relay (50-70 amperes).
Range 170-200psi (11-13 bar)
