Insert loudspeaker connection 4-way, matt blackFeatures: Front connection: plug-in terminals, red and black. Rear connection: screw terminals.Notes: Only for screw fastening. Attention! Pay attention to the installation space for plugs and bending radii. When using inserts with couplings, note: Not suitable for duct installation and standard device sockets. Connection with angle plugs recommended. When using these plugs, the power for connected devices is limited to 15 watts. Installation recommendation: Kaiser electronic sockets Flush-mounted installation: Kaiser Order No.: 1068-02 Hollow wall installation: Kaiser Order No.: 9062-94 Concrete installation: Kaiser Order No.: 1268-40