Package Includes: The system includes an air tank, a 150 PSI 12 volt air compressor, pressure gauge, pressure switch, hoses, accessories, horn buttons and installation hardware. Applicable Objects: Applicable to all vehicles equipped with 12V system. Specification: Size: about 380(L)×140(W)×300(H)mm/14.965.5111.81in Voltage: DC 12V Current: 23.0A Maximum pressure: 150 PSI Pump capacity: 6L (1.6GAL) Pressure switch setting: 90 PSI on, 120 PSI off Size: 165/230/295/350×90(dia)mm Sound level: 135dB Operating air pressure: 0.3Mpa-0.8Mpa Packing List: 1Air Compressor Pump.