Closed Circuit Television (CCTV) is a surveillance system that uses video cameras to transmit signals to a specific set of monitors or recording devices. CCTV systems are widely used for security and surveillance purposes in various settings, including homes, businesses, public areas, and government facilities. Key components of a CCTV system include cameras, monitors, recording devices (DVR/NVR), and sometimes additional accessories like motion detectors or infrared illuminators.