Closed-circuit television (CCTV) is the use of cameras to transmit a signal to a specific, limited set of monitors. CCTV is often used for surveillance in areas where there is an increased need for security and can be part of an access control system. The CCTV systems provide security to both commercial and residential properties by defending against theft, vandalism, and crime.

Main Components of CCTV system:

• Cameras

The camera creates the picture that will be transmitted to the control position. Cameras come in a variety of shapes and sizes. Some are mounted to be visible for ease of installation and deterrent effect. Others are concealed to enhance detection.

• Monitors

The monitor receives the transmitted electronic video signal from the camera. A CCTV monitor provides high lines of resolution (better picture quality) and accepts only video signals rather than RF/antenna signals.

• Recording Devices

DVR - Digital Video Recorder uses a computer hard disk memory to store images and is excellent at reproducing high quality images with little noise or picture degradation and is extremely useful in calling up an alarmed picture.

PC Based Digital Video Surveillance Capture Cards use a card installed in computer along software to allow you to view your CCTV Cameras, search through previously recorded footage, backup footage to CD/DVD, control pan tilt and zoom cameras either on the PC system or remotely and much more.

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