549-6223-02 is a part of the Concord 11-Series, a line of surveillance and access control products manufactured by Concord International. The particular part number is a controller board, which is used in many of the 11-Series systems. This board is used as the central control element for the system, and is responsible for all communication, data storage, and processing. The board features a number of LEDs, as well as connection ports for video input, serial data, Ethernet, RS-232, and audio. With this board, users can setup and control their surveillance and access control systems.