German made ASR 35 M ACP has amazing features including a Power socket for a power tool for using the automaticalstart-up/shut-down of the vacuum cleaner. AutoCleanPlus: saves both costs and time thanks to automatic MPulse filter cleaning during continuous use. If the optimum suction performance falls below a certain level, the filters are vibrated immediately + High user protection: certified in accordance with AU standard for M class dusts. Automatic shut-down when vacuuming liquids once the maximum fill level is reached Warning signal on shortfall of the minimum volume flow to protect the user Optimum suction power by preselection of the hose diameter & Automatic trailing mechanism for emptying the suction hose completely. Antistatic basic equipment prevents static charge when using appropriate accessories. Sturdy thanks to especially large wheels and castors with wheel stop .