For expansive spaces where conventional detectors fall short, the OSI-R-SS Beam Detector offers a powerful solution. As a reflected (single-ended) beam detector, it includes a high-precision 8″ reflector and built-in sensitivity testing to ensure long-term accuracy. Its robust design supports challenging installations, and the beam's coverage can span significant distances, making it ... https://www.quickshipfire.com/product/osi-r-ss-beam-detector/