95-125 PSI air compressor pressure switch or known as a pressure control valve. This switch has one port on the bottom for air inlet hook up, which is 1/4" female NPT. This switch is also equipped with an on and off lever and an unloader valve on the side, which is 1/4" compression if the unloader is not needed it does not need to be hooked up. This has a 1/4" Female NPT Pipe threads which can be changed to male using a pipe nipple. Specifications: Air Inlet - 1/4" Female NPT Pipe Threads Unloader Size: 1/4" Compression Equipped with a Manual On and Off Lever Pressure Setting: Turns on at 95 PSI and Shuts off at 125 PSI. (Can be adjusted slightly) Power and Amp Rating: 20 Amps MAX at 120 Volt 12 Amps MAX at 240 Volt Single Phase 9.6 Amps MAX at 240 Volt 3 Phase 12 Volt Power DC - 8.6 AMPS at 32 Volts DC, 3.1 AMPS at 120 Volt DC 1.6 AMPS at 240 Volt DC