![]() DIY Fixes for First Alert Smoke Detector’s Blinking Red Light This could be due to steam from a shower, cooking smoke, or even a bug or spider crawling inside the device. If the red light is blinking intermittently, it could mean that the detector has been triggered by something other than smoke or fire. ![]() Smoke detectors are designed to last for a certain amount of time (usually 10 years), and after that point, they become less reliable and may not function properly. In the case that the red light is blinking once every 10 seconds, it means the detector has reached the end of its life and needs to be replaced. ![]() This could be due to a malfunction or damage to the device. If the red light is blinking rapidly (about 4 times per second), it means the detector has detected a problem and needs to be replaced.
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