Wall to Wall coverage, Superior catch performance within 40 ft x 40 ft coverage area | Dynamic Temperature Compensation, Intelligently adjusts its sensitivity so that it can identify human intruders at virtually any temperature | An improved lookdown zone and coverage range of 40 ft x 40 ft provide wall-to-wall coverage | First Step Processing (FSP) almost instantly responds to human targets without producing false alarms from other sources | Optics and electronics are assembled into the front enclosure and sealed with a protective cover