The OSI-RE-SS is a reflector- sort linear optical beam smoke detector intended to run for a ingredient of fireplace alarm systems. The beam operates primarily on the principle of light obscuration utilising an Infra-Red beam. OSI-R-SS is often a 4-wire conventional reflector-kind linear optical beam smoke detector for use in https://myeasybookmarks.com/story4036837/the-ultimate-guide-to-conventional-beam-detectors