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Cameras are your eye in the sky and will serve you in the day and night depending on the cameras machinery. Most outdoor and indoor cameras operate under normal light and will give you the best quality when light levels are within the predetermined LUX level. Light levels are usually measured in LUX and although full daylight can be around 10,000 LUX, dusk can be as low as 1-10 LUX, complete darkness is 0 LUX and side street lighting can also be less than 1 LUX in some cases. The closer a camera is rated to 0 LUX the better its performance in low light levels. Considering a camera that has a low LUX level will enhance your system, so it can record 24 hours a day and then be viewed on a CCTV monitor.

A CCTV Monitor for a surveillance system invariably gets switched with an LCD television to capture images. This is okay as long as you do not want high quality images. Recent advancement in televisions has us viewing our programming in LCD (Liquid Crystal Display) or Plasma. CCTV monitors work under the same conditions; horizontal and vertical lines present an image, but these lines vary from 380 horizontal lines in black in white to 720×480 in LCD televisions. A monitor for security purposes are in high definition 1920×1080 which ensures that the image is adequate enough for viewing surveillance from a DVR.

The Standalone DVR is a storage unit for all motion captured from a surveillance camera. Depending on the amount of cameras will determine how many channels are needed for that DVR. When the cameras are connect to the DVR an operator has the ability to set preferences like automatic recording, motion activation, search capabilities and transferring data to a DVD. Internal components like the HDD and CPU allow for huge amounts of data to be recorded and processed efficiently. With the right compression for reducing heavily loaded video results in a DVR that digital records and completes an overall home security system.

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Source by Sean Golden