Professional Buildings Integrate with weather Command, fire, lifestyle basic safety and obtain Command systems on a single screen. OSI-R-SS is a four-wire conventional reflector-variety linear optical beam smoke detector for use in hearth alarm methods. The beam operates totally on the theory of light obscuration using an infrared beam. Acct: https://bookmarktiger.com/story18526592/the-fact-about-conventional-beam-detectors-that-no-one-is-suggesting