Digital Video Recorder (DVR),

allows you to actually view live action or action that you have already recorded while continuing to record. 

•  Remote access at all times
•  Improved storage, especially over long periods of time
•  Clear image copying
•  Long recording times
•  Internal web server
•  Hard drive for storage

Wireless Transmission, Some applications require the use of wireless signal transmission. Examples remote sites where cable installation is not practical due to terrain and where the distance to the monitoring station is too great.

SEE

     ....To Understand

          ....To Protect

              ...To Know

Camera,  convert the image from the camera lens into a real-time video signal.

 
Lens, This is perhaps the most important component of the CCTV system, but also the most improperly specified item.

Video Monitor, the goal of every simple CCTV application is to provide the best possible video signal output for monitoring and recording. The proper selection of video monitor is important.