Overview
A CCTV camera is a video surveillance camera that is part of a Closed Circuit Television system used to monitor and record activity in a specific area. Unlike broadcast television, CCTV signals are transmitted privately to a limited set of receivers, such as monitors or recording devices. These systems are used for security, public safety, and operational monitoring, and can be simple setups with one camera or complex systems with many cameras.
Closed Circuit”: This means the system uses a closed, private transmission path. Signals are not broadcast publicly like a normal TV show; they are sent directly from the cameras to a receiver, like a monitor or a digital video recorder.
Function: CCTV cameras are used to monitor areas for security and safety. They can provide real-time viewing or record footage for later review. 
Components: A system can include one or more cameras, cables or wireless transmitters, and monitors or recording devices.
Usage: They are widely used in various environments, from homes and businesses to public spaces, to deter crime, monitor processes, and ensure safety. 
Technology: Modern CCTV systems can be integrated with advanced technologies like artificial intelligence to analyze footage and anticipate risk patterns, not just record events.