The RTS Series 4000 Wired IFB system features the Model 4001 four-channel IFB control station which controls up to four separate talent feeds plus one Stage Announce send. Features two distinct audio sends per IFB channel for interrupt/non-interrupt or multiple program feeds. The unit has illuminated switches, programmable priority levels and gooseneck mic. The Model 4010 Central IFB Electronics Station contains all necessary control functions and electronics including line power, to provide the active link between the 4001, two 4030 belt packs other RTS options. Multiple earpieces are included with the system.