CO Alarm FAQs
On my First Alert® plug-in carbon monoxide detector, why is the green power light flashing?
With all First Alert® plug-in carbon monoxide detectors, any time there is a power outage, brownout, surge or other problem with the power, the alarm goes through a power up cycle. The flashing on your plug-in carbon monoxide alarm should stop after 5 minutes, then the light will stay a steady green.
