Do smoke detectors need to be replaced after so many years?
I always thought they were good for ever. And how does one know they are no longer working? Maybe that is why they should be replaced every _ ? _ years?
Ours are 9 years old. The one carbon monoxide detector shows lights glowing and or blinking but does not respond when the test button is pressed. I am guessing that is a candidate for replacement.
btk
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