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CCTV

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ALSO CALLED: Closed-circuit Television, Closed-circuit TV
DEFINITION: CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes. CCTV relies on strategic placement of cameras, and observation of the camera's input on monitors somewhere. Because the cameras communicate with monitors and/or video recorders across private coaxial cable runs or wireless communication links,  … 
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CCTV DEFINITION (continued): …  they gain the designation "closed-circuit" to indicate that access to their content is limited by design only to those able to see it. 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:Maintaining perimeter security in medium- … 
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