If there is no danger present when this happens, you may need to reset the alarm or replace the batteries. If a steady beep accompanies the blinking light, it means that it has detected smoke. When the Red Blinking Light is Accompanied by Sounds and Beeps Some need to be reset on a regular basis, even if they have not been triggered. Most models need to be reset after they have detected smoke. If the light on your smoke detector is not blinking at regular intervals or staying lit constantly, you need to reset your smoke detector. When the Red Light is Stagnant and Stable However, there are a few situations where you should be and will need to investigate promptly. In most cases, a blinking red light is an easy fix, and no need for concern. When Should You be Concerned By a Smoke Detector Blinking Red?

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