MMJ Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place.

Overview

MMJClosed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted the wireless links .

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