This additional control module, 18 mm wide, can be attached to the standard impulse switch and has a galvanically isolated contact level. The devices are mechanically connected. It is possible to work between the local and the central command point with two different control voltage potentials (e.g. AC local, DC central). The central control module, E294, is used professionally with control voltage circuits of various designs. With this attachable additional device, a clean higher-level and at the same time central command output (all off / all on) can be implemented. For such a solution, a central on-off control module must be attached for each impulse switch that is integrated into the central on/off control. The central commands always have priority and reliably switch the mechanically connected coil of the standard impulse switch on or off. This occurs regardless of the previous switching position of the individual impulse switches.
