WBS-670 (DISCONTINUED) 11/9/2017 Category: Products UHF band, single-channel wireless base station UHF band: operate in select frequency bands between 518-686MHz Single-channel Two separate channels for 2-wire or 4-wire connectivity Supports up to four full-duplex wireless beltpacks Standalone wireless communication system or combined with wired intercoms Full talk/listen headset at the base Rear panel connections allow system expansion Input and output level adjustment controls Stage Announce (SA) button