FDI-BS350 is professional intercom system for broadcast and television industry. It is an wireless 8-way full duplex intercom system. The device allows director and crew to talk with each other simultaneously. The crew could be divided into groups according to their departments. The director could choose which group to talk with. Each group could conduct internal communication simultaneously without disturbing others.The transmission distance of wireless signal could amount to 2 km or so in the open air. The signal is stable and reliable. Beltpacks are able to conduct full duplex call with base station in the backstage, make-up room, different floors (within 5 to 7 floors), outside the building, broadcast van and other common occasions.The beltpack battery duration time amounts to 8 hours or more in work state. The communication audio signal is encryption transmission. We could change channel if conflict with other devices.Designed with tally system, our products are compatible with varies video switchers, sound console, 2-wire and 4-wire party-line wired intercom system, even walkie talkie system and fixed telephone system with the support of other auxiliary equipment. Contact us for more assistance in choosing the best product for you, and getting the best price for your set of intercom!