Optical beam smoke detectors are significantly appropriate for preserving buildings with substantial open Areas such as warehouses, atriums and so forth. Optical beam smoke detectors are uniquely suited to shielding structures with huge open areas with superior ceilings like a warehouse or atrium. The OSI-R-SS detector is actually a mixed https://www.firesense.co.uk/type/conventional-fire-system/conventional-beam-detectors/