The OSI-RE-SS is actually a reflector- type linear optical beam smoke detector meant to function as a ingredient of fire alarm units. The beam operates totally on the principle of sunshine obscuration utilising an Infra-Red beam. OSI-R-SS is usually a 4-wire conventional reflector-form linear optical beam smoke detector for use https://maximusbookmarks.com/story18697652/fascination-about-conventional-beam-detectors