Optical beam smoke detectors are notably appropriate for shielding structures with big open spaces like warehouses, atriums and many others. OSI-R-SS is usually a four-wire conventional reflector-type linear optical beam smoke detector for use in hearth alarm devices. The beam operates primarily on the principle of sunshine obscuration using an https://thebookmarkfree.com/story18689824/the-5-second-trick-for-conventional-beam-detectors