Bosch VAC090S 9-Gallon Dust Extractor with Semi-Auto Filter Clean Semi-Automatic Filter Cleaning: Cleans filter on demand through remote activation button L-BOXX Integration: Instantly creates a mobile workstation Power Tool Activation: Allows power tool's switch to turn vacuum on and off Power Broker Dial: Optimizes usage of the available power and helps avoid blown circuits Wet vacuuming water level sensor: Automatically shuts down vacuum when water reaches a maximum height to protect motor