The OSI-RE-SS is a reflector- form linear optical beam smoke detector created to operate being a component of hearth alarm methods. The beam operates totally on the principle of sunshine obscuration utilising an Infra-Red beam. OSI-R-SS is often a 4-wire conventional reflector-variety linear optical beam smoke detector to be used https://socialmediatotal.com/story3951947/details-fiction-and-conventional-beam-detectors