Telex ES4000A-90007551-000 4 Ch Expander Station, No Power Supply

Expander station for the US2002, up to 4 ES-4000A expansion stations may be connected to the US-2002 (via 1/8" rear data connector) to add up to 16 channels (18 channels total). The ES-4000A typically utilizes the US-2002 microphone & speaker (or microphone headset) for communication with the added channels. It also has individual speaker outputs for independent monitoring of 1 or more of the 4 channels if desired. The user stations can operate in unbalanced mode to be Clear-Com® compatible.