Optical beam smoke detectors are specially appropriate for preserving structures with significant open Areas including warehouses, atriums etcetera. OSI-R-SS is usually a four-wire conventional reflector-sort linear optical beam smoke detector for use in fireplace alarm devices. The beam operates primarily on the principle of sunshine obscuration employing an infrared beam. https://bookmarking1.com/story18544032/a-review-of-conventional-beam-detectors