How does a CCTV surveillance system work?

The cameras send the information on the data it captures to the DVR or NVR. The video record then:

  • transmits the information to the screen
  • records the information on the local hard disc which resides within the video recorder.
  • connects to a router which broadcasts it across the web

This broadcasting is what allows you to access your feed from any computer, iphone or Android device.

Typical connection diagram of an Analog / TVI system. With a digital system, cabling will be CAT5/6 and usually no power supply to the cameras is required.

 

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