ELECTROMAGNETIC SHAKING AND MEASUREMENT OF PRESSURE DIFFERENTIALS; AUTO CLEAN.USER BENEFITS:For extraction from the power tool in continuous mode, both on construction sites and in the workshop.Especially suited for extracting concrete and rock dust.Compact vacuum cleaner for liquids and dry solids with commercial registration.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.User protection: certified in accordance with EU standard for L class dust.Automatic shut-down when vacuuming liquids once the maximum fill level is reached.Suction power control for adapted suction performance.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.Cable winding mechanism.Practical accessory case and storage area.