Useful CCTV definitions (Helpful for understanding Spec sheets)
Click on a letter
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
RS-232: Also known as serial data communication. A format for asynchronous digital communication which requires only two wires.
RS-422: More advanced than RS-232. Uses four wires in a differential communication setup. Can handle distances of up to one kilometer in length and can distribute data in up to ten receivers.
RS-485: More advanced than RS-422. Can distribute data in up to thirty two receivers.