Closed Circuit Television Systems enable the end-user to monitor, record and play-back recorded images from cameras located around the complex.
Against popular thinking, security cameras will not protect you from theft or damage. It will only show you, if the correct cameras are used and are in the correct positions, who the culprit is by replaying the recorded images.
With modern technology advancing every day, closed circuit television images are now stored onto specially designed equipment called digital video recorders (DVR).
In basic terms, a DVR is a highly specialised computer with special hard drives that are designed to be used 24-hours a day. DVR's can manage up to thirty-two camera inputs at a time.
Images can be recorded at specific times, all the time, or when the DVR detects motion within the area the camera is covering.
Analogue or IP Cameras?
There are two types of cameras, the standard camera that converts the digital signal to analogue to be sent down coaxial cable to the DVR. The other type of camera is an IP Camera that transmits a digital signal down a CAT-5e cable. Having TCP/IP protocals, the cameras sit on a Company's TCP/IP computer network, and with an IP address transmits the video signal through the network to a special digital video recorder.