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 overruns the suction by 10 seconds to clear the hoses of dust. Features vibration function that helps clear dust accumulated on the filter bag after use. 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 Dust-Free Air Sander ('A' Versions) or without ('B' Versions).