Closed-Circuit Television (CCTV) is a type of video surveillance system that uses cameras to transmit a signal to a specific, limited set of monitors, rather than to the general public. This allows the people monitoring the cameras to keep a close eye on the area being monitored, and to review recorded footage if necessary. CCTV systems can be used for security and surveillance purposes in homes, businesses, public spaces, and other locations, and they often include features such as digital video recording, remote viewing, and motion detection.