Closed-Circuit Television
CCTV stands for Closed-Circuit TeleVision and refers to the idea that the video footage is sent over a single channel with a set of wires (circuit). That then feeds into a monitor or a recording device (DVR) – creating what is practically a closed circuit. That's probably the quickest answer to "What does CCTV stand for". However, what many people refer to as CCTV isn’t actually CCTV when looking at the technology involved. Instead of being broadcast publicly for everybody to see, the cameras and monitors are communicating via a single wired or wireless connection. No other outside connections.
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