The DeVilbiss AC-0008-2 Compressor Pressure Switch helps regulate air tank pressure for compatible DeVilbiss air compressors by automatically controlling the motor's operation. It works by turning the compressor motor on when tank pressure drops below the preset cut-in level and shutting it off once the preset cut-out pressure is reached, helping maintain consistent air pressure and e... https://www.wholetoolbox.com/devilbiss-ac-0008-2-compressor-pressure-switch/AC-0008-2.html