The Bravo 230/2000 is a 240V Inflator which consists of a main motor and a supplementary (booster) motor, which increases the capacity and pressure. The two motors can run simultaneously to obtain maximum capacity and pressure. Press the orange button for the main motor and if necessary the red button that switches on the booster to obtain maximum performance, max pressure on main motor 3.8psi with booster motor 7.4psi.