Older CCTV systems used small, low-resolution black and white monitors with no interactive capabilities. Modern CCTV displays can be color, high-resolution displays and can include the ability to zoom in on an image or track something (or someone) among their features. Talk CCTV allows an overseer to speak to people within range of the camera’s associated speakers.
CCTV is commonly used for a variety of purposes, including:
Overseeing locations that would be hazardous to a human, for example, highly radioactive or toxic industrial environments.
Maintaining perimeter security in medium- to high-secure areas and installations.
Observing behavior of incarcerated inmates and potentially dangerous patients in medical facilities.
Building and grounds security.
Obtaining a visual record of activities in situations where it is necessary to maintain proper security or access controls (for example, in a diamond cutting or sorting operation; in banks, casinos, or airports).