The Dewalt 5134377-00SV Pressure Switch regulate air compressor operation by automatically controlling when the motor starts and stops to maintain proper pressure levels. This component operates by sensing the internal tank pressure and activating the compressor when the levels drop below a set point, then shutting it off once the desired pressure is reached. Through this simple on-of... https://www.wholetoolbox.com/dewalt-5134377-00sv-pressure-switch