FT-800 security 8-channel Surveillance System Product Description FT-800 security 8-channel Surveillance System is designed for Tv station,communication command center,outside broadcast van,live performance and project command center.it is used to be used with telikou intercom main station. full-duplex work way and wired connection maintain the functions are more stable ,the voice is more clearly.easy to operate and well done in denosing would provide you more quality output. It could be used for combining distributed matrix talking system that is economical and flexible.the advantages are : 1.7 channels can directly connect with headset 2.if you want to connect beltpack,BK-100 is first choice. 3.2 line connecter coul be connected with the other intercom equipment. 4.adopt pannel speaker 5.sidetone is adjustable 6.background voice input 7.broadcast output 8.6.35mm goose neck mic connecter.