The AO 6004 Audio Output Unit outputs four floor or language channels to IR language distribution systems, recording and/or web-streaming devices. By default the channels 0-3 are selected but the audio properties and channels can be changed by the SW 6000 on a PC. The units can be easily daisy-chained in the DCS-LAN with shielded F/UTP or U/FTP Cat-5e cables (sold separately). The AO 6004 s designed to be used can be free-standing, Works with DDS 5900 and DCS 6000 Systems.