The OSI-RE-SS is a reflector- sort linear optical beam smoke detector built to work as being a element of hearth alarm units. The beam operates primarily on the principle of light obscuration utilising an Infra-Crimson beam. Optical beam smoke detectors are uniquely suited to preserving structures with substantial open regions https://geilebookmarks.com/story18543391/5-easy-facts-about-conventional-beam-detectors-described