Interlogix PrecisionLine PIR/RCR Motion Detector, 35 Ft., Pet Immune (80 Lbs.) (RCR-PET) Dual Technology combines range-controlled radar (RCR) technology with a passive infrared system Immune to small animals up to 80 pounds Selectable range up to 35 feet Multi-color LED provides detector status Opaque Fresnel lens blocks visible light