Above is an example of a CCTV network diagram. Closed-circuit television (CCTV) is a video surveillance system which involves cameras and monitors. This method, unlike broadcast television, only receives local signals. Although it is a function of practically every video camera, CCTV is primarily a system for visual control of certain areas for security concerns, such as banks, airports, supermarkets, and other locations.CCTV is frequently used to supervise the industrial process, particularly when individuals are advised to avoid the area.
