M-classification meets the EU directives - suitable for soft wood, hardwood and mineral dust 0.1 mg/m³. Can be used for soaking wet and dry materials. Innovative two filter system enables a constant high suction power even for fine wooden and concrete pigeons. Automatic filter cleaning in the 15 seconds for optimum suction results. Electronic suction power control - to the required adjustment of the suction. Electronic Air current monitoring indicates an acoustic warning signal in case of suction force waste. Synchronous monitoring with 15 seconds remaining loose Aufsaugung-off delay for all waste. Integrated socket with automatic activation of the suction cup, with the use of the connected electric tool. Telescopic handle and large wheels facilitate transport on any construction site.This text is machine translated.