Question about Kidde i12040 Hardwire Smoke Alarm with Hush Feature and Battery Backup

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My smoke/carbon monoxide detector keeps saying "low battery". I have replaced the batteries in all (5) detectors. They are hardwired. The one downstairs goes off continually and now the one upstairs has started saying "low battery"

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My Smotec 3786A indicates not to install it in above 85% humidity.
One of my three seems to go off annually or so and this is what
recently put it down to. I was making an espresso coffee on the
stove and it generates a lot of steam and off goes the fire alarm.
I did change the battery to no avail.

Posted on Mar 29, 2011

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Posted on Jan 02, 2017

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