The MP3 player is installed in a compact housing. It can be controlled and parametrised via RS485-Bus with the Mod-Bus protocol. Alternatively it is possible to start the soundfiles/playlists via digital inputs. In this case there is the possibility to choose the soundfile via an operation panel or via 4 inputs (binary code). This is for example used in the combination with experience showers. A HMI (graphical display with cursor buttons) is used for the parametrisation. The sound files can be read from a micro SD card or a USB stick. The audio signal can be transmitted via a LineIN/LineOUT-connection and emited via a integrated 20W stereo amplifier. The following audio formats can be decoded: MP3, Ogg Vorbis, WMA, WAV PCM. The unit is prepared for the installation in a control box/housing on a cap rail.