Some models don’t even blink – they have a constant light on when they’re working fine. Normal operation is usually indicated by a green light, although there are smoke detector models that use a red light for both normal operations and raising an alarm. The good news is that normal operation is always the most likely reason for the blinking – it means that the batteries in the detector are fine and that it’s working properly. If your smoke detector blinks once a second, that’s not normal operation, that’s something else entirely. Some smoke detectors blink once a minute or once every thirty seconds. The blinking, however, shouldn’t be frequent. ![]() ![]() Many people don’t know this, but smoke detectors blink even during normal operations. Things You Shouldn’t Do With Your Smoke Detector.How Useful Are Smoke Detectors? (Statistics).
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