The package for the Smokegard Duo Centric Chamber Model 800A8 is a battery powered home smoke detector manufactured by Statitrol after the company became a division of Emerson Electric; UL listed as a single station fire alarm device.
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Emerson Electric and Statitrol Corporation, "Statitrol/Emerson Smokegard Duo Centric Chamber Model 800A8 - box" (1978). MS055-08-0001 - 0003 images. 13.
small business, smoke detectors, fire protection, fire safety