CCSD-CU CCS 1000 D Control Unit 1UThe Control Unit is the main component of the CCS 1000 D Digital Discussion System. It supplies DC power to all connected Discussion Devices (CCSDDS CCSDDL) and monitors and controls the discussion system. Up to 80 Discussion Devices can be connected to a single Control Unit; the system can be expanded to a maximum of 245 Discussion Devices by using Extension Units (CCSDEXU). Touchbutton control allows for easy configuration and operation of the unit,