Long-Range Detection. High Ceiling Protection. Reliable Performance. The GULF ALARM® Conventional Reflective Beam Detector is designed to provide effective smoke detection in large, open areas with high ceilings where point-type detectors may not be practical. Using infrared beam technology, the detector identifies smoke particles by monitoring changes in light obscuration between the transmitter and reflective prism. Engineered for accuracy and stability, the reflective beam detector offers dependable fire detection across extended distances with simplified installation using a single-ended design.