Monitor is an important part of closed-circuit monitoring system (CCTV for short), the display part of the monitoring system, the terminal equipment of the monitoring system, which acts as the "eyes" of the monitoring personnel and plays a key role in the investigation afterwards.

As the display terminal of the closed-circuit monitoring system, the monitor is an indispensable part of the monitoring system except the camera.

For a long time, monitors have been mainly used in finance, jewelry stores, hospitals, subways, railway stations, airports, convention and exhibition clubs, commercial office buildings, leisure and entertainment places, etc. , and is responsible for the safety work.

Surveillance cameras generally have a red indicator light, which will light up when working, indicating that they are monitoring.