RCA connector
The main unique feature of the Dimensia system was the MRT 003, a 32-kilobyte built-in computer module which allowed the monitor to communicate with all Dimensia components and the remote functions. All components were connected via the control bus found on the I/O panel on the back of the TV. The control bus was a unique RCA connector which was colored black. All Dimensia branded components had this control jack and they all interconnected by using RCA plugs that could piggy-back, resulting in a daisy chain which simplified wiring. This was known as the SystemLink, a communication system that had 16 kilobytes of computer memory (after the discontinuation of the Dimensia product line, RCA reused the SystemLink term for their universal remotes).