CCTV is an abbreviation of Closed Circuit Television. This is a system where the circuit is closed and all elements connected.
CCTV security camera is defined as the use of a video camera to send video to a number of monitors. This type of system is different from television in that the signal is not transmitted openly, but only transmitted to certain television monitors that are programmed or wired to receive signals from this camera.
The most obvious and common use of CCTV is security. These cameras are generally installed in parks, shopping centers, government offices, and other places where the risk of illegal activities and theft is unavoidable.
However, many companies and institutions also use this camera to monitor their employees to avoid complacency at work. It can be hidden in trains and buses to detect vandalism. This can be used to watch animals at the zoo. It can even be used to display infrared vision. The application is almost unlimited.
The initial CCTV system was a type of camera that was connected to a television screen or monitor. This initial system might not even be able to record what happened. Just take a picture in one place and display content on one screen in another place.
Many things have changed now. Commercial CCTV systems have been advancing for years, but we now have the ability to install and use sophisticated CCTV systems in our homes and offices, significantly reducing costs and improving facilities.