Adapter plate that can be installed without using tools, for fixing L-BOXX and Tanos systainers on the head of the vacuum cleaner. The high-performance turbine ensures both a high suction capacity and a high vacuum. The outcome is an excellent extraction result. Continuous automatic flat filter cleaning ensures no loss of suction. The flat-fold filter with Teflon coating / nanocoating allows optimum use of the tank volume. With permanent socket and electronic automatic on/off switch. Flow sensor technology monitors the flow rate and emits a visual and audible signal to indicate any drop below the statutory minimum value of ≤ 20m/s. The flow rate control via the rotary switch minimises possible vacuums on the surface during intermediate and finish sanding. Suction diameter selector switch for adjusting the optimum flow rate. Suitable for wet vacuuming: with electronic liquid level control. Soft start stops any voltage peaks at the start and the run-on feature (15 sec. overrun) empties any remaining dust in the vacuum hose.