Saturday, October 24, 2009

surveillance cameras

Video surveillance cameras are becoming common by the day as the IT sector experiences a boom and related technology becomes cheaper and more advanced. There are many types of surveillance cameras such as dome cameras, hidden cameras, smoke detecting cameras, and "smart" cameras that are equipped with motion detectors.

Video surveillance cameras can also be classified according to the technology that is used in them. CCTV cameras are those that have a completely closed circuit and all the elements are connected together. Conversely, advanced digital cameras are those that are not connected by a circuit but can be located at any site around the world. Digital video recorders do not need VCR's and other recording equipment in order to capture or record on-site activities. The software automatically records any unusual activity in odd hours of the day.

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