CCTV- Closed Circuit TelevisionPeople can also buy consumer CCTV Systems for personal, private or commercial use.
A more advanced form of CCTV, utilising Digital Video Recorders (DVR), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts).
In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room; when, for example, the environment is not comfortable for humans.
CCTV systems may operate continuously or only as required to monitor a particular event.
