SB-704 (Last Time Buy) 11/3/2017 Category: Products, Clear-Com Encore Analog Partyline Systems, Main Stations Supports up to 55 beltpacks or 10 speaker stations on 4 channels 10 x 4 assignment switching matrix Automatic short-circuit protection and reset with LED indicators Visual and audible call signaling 3 interruptible IFB channels Individual volume controls for each channel Channel linking Remote Mic Kill Stage Announce with relay External switchable line termination on each channel Universal voltage power supply