Security camera systems work via closed-circuit television (CCTV). This CCTV differs from broadcast television because all of the components of the cameras and televisions are linked with cables or alternate direct means. CCTV can be viewed in real-time, and there is no need to broadcast a signal. 1205 cat0 3072
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Source: Video Surveillance Equipment, CCTV Cameras & Security Systems Guide
Extensive collection of articles on everything you need to know about video surveillance equipment, CCTV cameras, biometrics and wireless security systems for business and personal use.
How security camera systems work
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