Question about First Alert SC9120B Smoke / CO Detector with Battery Backup & Strobe
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Posted on Jan 02, 2017
SOURCE: I have just purchased three
When I worked Electrical in a Hardware store we were told by Nighthawk and f\First Alert and we told our customers that you want the detectors 4-6 feet off the floor never near a water heater or furnace since this can cause false alarms. The CO will rise, so one on each floor should be enough near a central stair if possible. Other wise make sure at least one is in the bedroom.
Posted on Mar 01, 2011
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Normal Operation (AC Power)
Green LED ON; flashing Red LED once/ minute
No Audible Alarm
Normal Operation (DC Power - 9120B only)
Green LED OFF; Red LED flashes once/minute
No Audible Alarm
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