Stereo MP3 player (Mpeg 1 layer 3, from 64 to 192 Kbps.), with unbalanced line-level stereo output, 20W mono-amplified output at 4 Ohms (@24VDC), 2U DIN width in electrical panels, audio file configuration and storage on MMC and SD cards (includes sample SD card), 1 opto-isolated logic output associated with the playback function, 6 opto-isolated logic inputs associated with 6 different audio files (63 in binary mode), RS485 serial port for remote control, 4 Play, Stop, FFW & RW and Volume buttons on the front panel. 4 different playback modes: Playlist, CD, Logic and Serial. Power supply included.