FT-800 is a eight channel intercom system which includes.
It has seven 4-wire and one 2-wire channels.
FT-800 supports Tally with BK-100 belt pack and TL-2 Tally light.
It also can connect with headset directly without belt pack.
FT-800 is default with four 4-wire channel and one 2-wire channel.
The rest three 4-wire channel needs to purchase channel board separately.