This oil-less diaphragm air compressor is designed for compactness and portability. Sturdy air tank stores reserve air volume and reduces pulsation. Tank-mounted unit. Air pressure in the tank is regulated with an automatic on/off switch to a maximum of 40 psi. 5 foot, 3-wire grounded cord. 1/8 hp motor operates on 115 volts, single phase; 60 cycle draws 0.8 amps. 1-year limited manufacturer's warranty.