Smokegard Dual Chamber Model 907B2 is a direct wire AC line powered home smoke detector. UL listed as a sinlge or multiple station smoke detector. U.S.Patent No 4,335,378, Other patents pending.
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Statitrol Corporation, "Statitrol Smokegard Dual Chamber Model 907B2 - front" (1970). MS055-08-0001 - 0003 images. 18.
small business, smoke detectors, fire protection, fire safety