CCTV Surveillance - HD

Closed-circuit televison is called as CCTV.

CCTV is the use of video cameras to send out a signal to a specific, small set of monitors. Many stores use cctv as a theft prevention deterrent. Cctv is used in a wide range of areas where large amounts of people gather. Cctv is also used in areas where security is very important. Many factories use cctv to keep track of entrances and exit