HOME » QUESTION » The end user feedbakc that the LED of smoke alarm stopped flashing the red light once on 53 sec. Do you know what might be the reason for that?

Q：The end user feedbakc that the LED of smoke alarm stopped flashing the red light once on 53 sec. Do you know what might be the reason for that?

A：

Devices can flash normally but not easy to find because it's quite fast.Pls make the environment a little dark and start a stopwatch.then you can pay attention when time is about over 40 sec.

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