Advanced Digital Technology: • Two double passive infrared motion detector with eight narrow detection beams, managed by Full Authority Digital Electronics Control (FADEC) • High-resolution and full dynamic range digital signal conversion • High-speed, advanced algorithm digital signal processing • Digital EMI / RFI interference rejection • True Pet Immunity, up to 40kg (90lb) Advanced Optical Technology: • 4x dual element sensors arrangement • High efficiency long focal point (1.77") lens, providing long-range narrow beams • 2 pairs of narrow beams per side provide 2x signals per protected area crossing for increased "catch" and false alarm rejection • Combination optics of mirror reflector and 2nd generation Fresnel "LoDiff" Lens • Increased white light rejection Easy Installation and Setup: • Single or Dual Zone operation modes: two sides can report to a single zone or to two separate zones • Optical and digital range adjustments • Bright LED and buzzer indicator for clear adjustment feedback • No need for PCB removal • Wall-mount, with built-in level tool • In-field firmware upgradable via serial port