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As a minimum, you will need at least one CCTV ( Closed
circuit Television) camera and something on which to
display the camera images. This could be a monitor or
a TV set (providing you have "video in" jacks).
If you wish to record images, you will need at least
a VCR. CCTV Cameras can be Black and White (B/W) or
color. The differences in cameras are explained on the
CCTV Cameras page. Camera lenses have a major bearing
on the field of view of the cctv camera. In varying
light conditions, an auto-iris lens is probably needed.
Vari-Focal (manual zoom) and power zoom lenses are also
available. The differences in lenses are explained on
the CCTV Camera Lenses page.
More than 1 or 2 cctv cameras require more complex
equipment - traditionally a splitter or multiplexer
(enable multiple cameras to connect to one recording/display
port) and a time-lapse VCR for recording, as well as
a display monitor.
However, with today's Video Capture Boards ( add-in
boards for computers) and Digital Video Recorders (DVRs),
the multiplexing is performed by the video capture board,
recording is done on the computer hard disk and camera
images are displayed on the computer monitor. Recording
need not be continuous but can be accomplished only
when motion is present in a camera field, at pre-set
times or on receipt of an alarm signal. Remote computer
users can dial-in via modem, access over a Local Area
Network or over the Internet. Now you can observe and
control camera views as they are happening! You can
see what is going on in any part of your business when
you are at home or in other areas of your business.
You ca even access previously recorded videos. We strongly
believe that these advances in technology offer far
greater benefits and functions than the traditional
methods of multiplexing, recording and display - benefits
that can often be less costly than those provided by
traditional video surveillance equipment.
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