Featuring dual-mic Environmental Noise Cancellation (ENC) for use in loud environments, the Hollyland Solidcom C1 Pro Wired Headset connects to the hub (available separately) via a 10-pin LEMO connector to function as a master headset for this full-duplex wireless DECT intercom system. The system supports up to 9 users at the same time and allows for further expansion by daisy-chaining additional hubs to accommodate more headsets.