Tough, composite bin and motor housing are suitable for industrial/body shop applications. Fitted with microchip controlled electric and air supply circuit which monitor power/air to the power tool and automatically activate the suction. The same microchip over-runs the suction by 10 seconds to clear the hoses of dust. Supplied with a combined air/vacuum hose to minimise trailing hoses. All DFS models require an independent power/air supply. DFS models can be purchased with MA150AS air sander (A Versions) or without (B Versions).