The OSI-RE-SS can be a reflector- variety linear optical beam smoke detector created to function as a ingredient of fireplace alarm programs. The beam operates primarily on the principle of sunshine obscuration utilising an Infra-Purple beam. OSI-R-SS is actually a four-wire conventional reflector-variety linear optical beam smoke detector for use https://ilovebookmark.com/story18450458/details-fiction-and-conventional-beam-detectors