On 12/14/2015 8:14 PM, Oren wrote:
A few years ago I replaced all my detectors. Bought the unit where
there is no need to remove it from the ceiling for a battery change.
They have an access (door) to replace the battery. Some are
inter-connected to AC power and some are not.

Why do batteries die at 2:00 AM and start chirping ?


Programmed and coded by people in a
different time zone.

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Christopher A. Young
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