Low current cable 2x 0.5mm² in protective sheath -black / black, numbered 1 & 2 -Material inner conductor: CCA copper-clad aluminum Ideally suited for the installation of central vacuum cleaners. The low-voltage cable is laid parallel to the pipe system. This is connected to all suction sockets and, for example, the dustpan. This is used for communication between the central vacuum cleaner and the remote start hose. You can find our installation instructions in the download area.