The dbx ZC-BOB Breakout Box connects ZC series wall controls to dbx DriveRack or ZonePro devices. It has six RJ-45 input jacks for accepting wall controls and a single RJ-45 output jack for connecting to the DriveRack or ZonePro device. Also known as -DBX ZC-BOB Breakout Box for DriveRack and ZonePro-dbx Professional - ZCBOB - Zone Controller