The HUB interface is a simple and affordable way to add full-duplex wireless headsets to popular Clear-com wired intercom systems. The interface connects the HUB (sold separately) to the wall socket or rack-mounted power console. Signal level settings create a seamless audio link with any combination of up to 6 transceivers. Choose any combination of wireless headsets to create a fully customised system. -Add six wireless units at a time -Roaming users communicate via the intercom -Everyone communicates in full duplex -Roaming users can communicate with wired hands-free headsets, simultaneously and without interconnect cables.