Closed-circuit television (CCTV)

Closed-circuit television (CCTV)

Closed-circuit television (CCTV), also known as video surveillance,[1][2] is the use of closed-circuit television 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, though it may employ point-to-point, point-to-multipoint (P2MP), or mesh wired or wireless links.