The OSI-RE-SS is actually a reflector- variety linear optical beam smoke detector made to function as being a element of fireplace alarm programs. The beam operates primarily on the basic principle of light obscuration utilising an Infra-Crimson beam. OSI-R-SS is usually a 4-wire conventional reflector-kind linear optical beam smoke detector https://mysocialport.com/story3970938/how-much-you-need-to-expect-you-ll-pay-for-a-good-conventional-beam-detectors