It is a Passive Infrared (PIR) Volumetric Intruder Detector with Fresenel lens equipped with a Day Night colour Camera. It is intended for highly professional applications where there is a simultaneous need for intruder detection and video monitoring related to an area to be protected. Its distinguishing features are: Integrated Active Balun, functions such as; Energy, energy quantity detection mode; Polarity, beam polarity detection mode; Timed-controlled memory of alarm.