The Clear-Com TMB22509INCC Tempest 900 4-Channel 900MHz Wireless Intercom Kit is a robust, interference-resistant wireless intercom system designed for professional communication in demanding environments like broadcast, theater, and live events. Operating in the 902-928 MHz frequency band, it provides four full-duplex audio channels supporting up to five wireless BeltStations per BaseStation simultaneously. The system uses Frequency Hopping Spread Spectrum (FHSS) with Time Division Multiple Access (TDMA) for secure, clear communication and resistance to multipath interference and signal dropout.