400 Specification: -Voltage: 12 Volt -Max. Amp: 30 AMPS -Max. Working Pressure: 150 PSI -Max. Ambient Temp: 158 F -Min. Ambient Temp: -40 F -Motor: Permanent Magnetic -Max. Duty cycle @ 30 PSI: 40 minutes (@72 F) -Dimension: 8.00" L X 4.00" W X 7.05" H -Net weight: 8.00 lbs "VIAIR warranties only compressors that have been installed using their installation instructions included with each compressor. Installation of an adjustable pressure switch can allow compressors to operate beyond their rated duty cycle and working pressure. Use of an adjustable pressure switch will void the warranty on any VIAIR compressor."