ASL Intercom PS 6379 MK II, professionelle 6 channel Intercom Masterstation with internalspeaker, internal powersupply for up to 40 Beltpacks or 20 Dual Channel Speaker-Stations, consdenser gooseneck microphone, Volume - Talk - Call per channell, Talk and Call to all,, Buzzer and Mic Mute switchable, 4 Pol Headset-connection, optional Rackmount to 19" 2 HE available, table top version