![]() ![]() 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. Older CCTV systems used small, low-resolution black and white monitors with no interactive capabilities. Because the cameras communicate with monitors and/or video recorders across private coaxial cable runs or wireless communication links, they gain the designation "closed-circuit" to indicate that access to their content is limited by design only to those able to see it. How does CCTV work?ĬCTV relies on strategic placement of cameras, and observation of the camera's input on monitors somewhere. CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes.
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