The EAA with coupled, manually actuated valves for use with the CT mobile dust extractor saves the user time-consuming hand movements and journeys guaranteeing optimised dust extraction. This is achieved with integrated automatic switch-on/shut-off for dust extraction, easy closing and opening of the extraction channel and support for two electric or air tools. EAA offers extremely flexible mounting options: directly on the wall, the ceiling or on the ASA boom arm for greater ease of movement.