They all blink at regular intervals, seemingly indicating that all is well. Or is it?
I suspect that the blinking lights only indicate that the circuits are working properly. But, does that mean they will actually sound off in the presence of fire/smoke??
How can I be sure that I can rely on them when there is a fire or smoke? Just what does the blinking LED mean??
While googling, I noticed that some people recommend new smoke detectors every ten years or so. Is there any rational need for this, or is it just an urban myth? Many of my electronic components have lasted more than 20 years. Why should smoke detectors conk out after ten years?
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