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EV635 Wall Mount Mirror Optic The step-focus design of the Aritech EV635 is so precise that detection at 60 metres is as consistent as at 3 metres. Simple clip-on mirror masks allow installers to select from 12 coverage patterns. Utilising 4D signal processing, an Aritech EV635 sensor applies several stages of analysis to precisely identify the characteristics patterns of human movement. False signals from environmental disturbances such as static heat sources, air turbulence from heaters or air conditioners, visible light or rapid background temperature fluctuations are rejected. Slow noise build-up is recognised and suppressed before it can destablise the sensor. Shocks and spikes are also recognised and suppressed. Offering 24 metre wide angle or 60 metre long range, all coverage patterns include a full 40 foot central curtain, making it impossible for intruders to crawl under the sensor without detection. |