Control module with integrated digital decoder (Märklin-Motorola, NMRA-DCC) for 2 light signals (a main and a distant signal) with LEDs and a common positive pole or incandescent lamps if these together do not draw more than 200 mA of current. Soft light changes between the signal images. Suitable for all Viessmann signals and also signals from other manufacturers - except for the Viessmann signals with the new multiplex technology. The module can be operated conventionally via the button control panels cat. no. 5545, 5546 and 5547 can be switched or directly digital. It is equipped with the Viessmann signal bus and can be configured for the following applications: two- or multi-aspect light signal. The button control panel cat. no. requires a two-aspect main signal with the signal images.