The Protech by Hirsch SDI-76XL2-AP is the pet-immune variant of the PIRAMID XL2 outdoor dual-technology intrusion sensor, delivering reliable wide-angle 50 ft. x 50 ft. (15m x 15m) volumetric coverage (H 90°, V 60°) while ignoring animals in the detection zone. Combining AND-gated Stereo Doppler microwave and passive infrared technologies, both channels must activate simultaneously to generate an alarm — virtually eliminating false alarms from environmental sources. The Lens A-Pet features a modified lower detection curtain that filters out pet-sized thermal signatures while maintaining full sensitivity to human intruders across the entire coverage area. Powered by 10 to 28 VDC, the SDI-76XL2-AP features 10-position digital range and sensitivity controls, balanced temperature compensation from -40°F to +158°F (-40°C to +70°C), all-metal RFI/EMI shielded housing, and a form C solid-state relay output. Ideal for residential estates, car dealerships, equipment yards, and any controlled outdoor area where pets or small animals are present — the Lens A-Pet delivers the same proven XL2 detection performance without the nuisance alarms.