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[ekanis]

Detector beeps every six minute. Display light is green and flashing every few seconds.

I believe unit is defective (5 years old). No battery (it is wired). How do I get the beeping to stop.

Thanks.

[Ryan]

Although the 240-COE is not a part we stock, do keep in mind there has been a recall of these products. You should contact the manufacturer to see if you are entitled to a replacement.
Here is news about the recall

Also, there is an "End of Sensor Life indicator" which warns when alarm replacement is needed. It seems you have gone through the expected lifetime of your sensor and it is time to replace it.

Hope this helps.
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