The OSI-RE-SS is usually a reflector- form linear optical beam smoke detector intended to function as a ingredient of hearth alarm methods. The beam operates totally on the theory of light obscuration utilising an Infra-Purple beam. OSI-R-SS is often a 4-wire conventional reflector-form linear optical beam smoke detector for use https://echobookmarks.com/story18525519/the-best-side-of-conventional-beam-detectors