In the area of electronic monitoring and security systems, CCTV is the acronym used for Closed Circuit TV, which originated from the English acronym for the same service, CCTV (Closed Circuit Television).

But in practice what is CCTV? Closed Circuit TV is nothing more than an internal monitoring system, carried out through distributed cameras connected to a central system, which makes images available through monitors as well as recording these records.

CCTV is mainly used for monitoring and surveillance, aiming to record security incidents, vandalism, improper behavior and several other occurrences. However, it has also been widely used for other purposes, such as road monitoring, environmental, behavioral, work safety, among others.