It is called a closed circuit because, contrary to what happens with the broadcast, all its components are linked. In addition, unlike conventional television, this is a system designed for a limited number of viewers.The circuit may simply be composed of one or more surveillance cameras connected to one or more video monitors or televisions, which reproduce the images captured by the cameras. Although, to improve the system, other components such as videos or computers are usually connected directly or linked by network. In Compunet we handle the best brands, including Avigilon of which we have the certification and direct distribution of the brand.