One SNB is required for each zone where a TSK35C in-wall touch screen is to be used. It typically sits next to the active speaker and it is designed to allow the SystemNet hub to communicate with the active speaker (via the keypad connection) whilst replicating that connection for the connection of the TSK35C.
Dimensions (WxDxH) 145 x 22 x 64mm
Termination: EIA/TIA 568B punchdown connectors
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