The motion detector has at least 5 major advantages over P.I.R. detectors.

1. There is no need for any separate detection devices ( as it uses the actual picture) making it ideal for covert use and also in vulnerable or vandal prone situations.

2. Because it uses the actual picture, it can be used to detect motion through glass, making it easy to set up a concealed camera, viewing through a window.

3. It can be set up to ignore most of an area, but will trigger when someone, for example, picked up a handbag, tried a car door handle, or opened a till draw or a cupboard.

4. The detection area ( or dot ) can be re-positioned in seconds, to cover a different area e.g parked vehicles which are not in the same place every time.

5. In a multi-camera situation, the motion detector can be easily moved to a different camera as required, making it very flexible and economical to use.

How it works
Once connected, the video motion detector works using an "on screen display" consisting of four white rectangles. These rectangles can be positioned anywhere in your visual display, they can also be adjusted individually, horizontally or vertically to cover a larger or smaller area ( see pictures ). Once you have positioned the rectangles to protect the area you require, you can choose whether the dots remain visible or not on your monitor and VCR.

If there is any movement or sudden change of light level in the selected area, the video motion detector goes into an alarm condition emitting an audible warning tone ( which can be silenced if required). The unit has several different types of alarm contacts, that can be used to activate other equipment when in alarm mode, e.g. the Automatic Video Controller or an alarm system, this makes it ideal for unmanned or rarely visited sites.

The use of this equipment, in a rarely visited or remote site, can by utilising the automatic video controller and a normal domestic VCR give good coverage, without the labour intensive problems associated with time lapse VCRs.