Abstract: The disclosure relates to a system, comprising a vacuum apparatus having a vacuum apparatus housing and having at least one vacuum apparatus mains socket, the at least one vacuum apparatus mains socket being attached to the vacuum apparatus housing. According to the disclosure, the system additionally comprises a plug-in module, having a plug-in module communication unit, an electrical plug-in module mains plug unit, and a current control unit, which is designed to control an electrical current between the plug-in module and the vacuum apparatus.

Abstract: A filter element comprises a porous body. The porous body is made of bonded matter, including: at least one material for binding lead; and at least a binder having a Melt Flow Rate, MFR, of more than 1 g/10 min. The porous body has a Mean Flow Pore size, MFP, in a range of between 0.1 and 11 ?m.

Abstract: The disclosure relates to a system, comprising a vacuum apparatus having a vacuum apparatus housing and having at least one vacuum apparatus mains socket, the at least one vacuum apparatus mains socket being attached to the vacuum apparatus housing. According to the disclosure, the system additionally comprises a plug-in module, having a plug-in module communication unit, an electrical plug-in module mains plug unit, and a current control unit, which is designed to control an electrical current between the plug-in module and the vacuum apparatus.

Abstract: A suction connection adapter for a suction device includes at least one machine connection unit and at least one suction device connection unit. The at least one machine connection unit is detachably connected to a machine tool, in particular a hand-held power tool. The at least one suction device connection unit is detachably connected to a suction hose of the suction device. The suction connection adapter has at least one sensor device.

Abstract: A suction apparatus includes a suction apparatus housing, a suction hose, at least one suction apparatus communication unit, and at least one sensor device which comprises at least one sensor unit designed to detect at least one operating signal of a machine tool, in particular of a handheld machine tool. The suction hose is assigned the at least one sensor device. The at least one sensor device has at least one signal processing unit and at least one sensor device communication unit. The signal processing unit is designed to receive the operating signal from the sensor unit and process said operating signal into at least one communication signal, and the sensor device communication unit is provided to establish at least one communication connection to the suction apparatus communication unit and to transmit the communication signal to the suction apparatus communication unit.