Main Function: This air compressor pressure switch control valve, 90-120psi is used to regulate the closing and starting pressure of the air compressor.Come with the valve knob, can adjust the air pressure according to your need. Also comes with the barometer, can be set and read the data, easy to read & easy to adjusting ON/OFF RED SWITCHThis Air Compressor Pressure Switch Control Valve 90-120 psi 240v comes with a red switch knob on the top, easy to operate. CUT-ON Pressure 90 PSI &CUT-OFF Pressure 120 PSI Air Compressor Pressure Switch Control:Pressure switch manifold regulator gauges air compressor, Rated current: 16A-20A, 220-240VAC, maximum working voltage: 240VAC, Max pressure: 175PSI, 12BAR TipsWhat you received is that the Air Compressor Pressure Switch Control Valve 90-120PSI Pressure Regulator with Pressure Gauges Fittings Set needs to be assembled by itself before use Fast Response and Pressure ReductionPiston seal adopts v-type sealing ring, good sealing, the flow rate is 30% higher than that of traditional diaphragm type.The valve body structure has overflow port, for fast pressure reduction.The pressure valve switch of the air compressor has the characteristics of high accuracy and fast responsenstall