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Operating Manual
Battery replacement
About your new thermostat
69-2566EFS—05
Batteries are optional (to provide
backup power) if your thermostat
was wired to run on AC power
when installed.
Install fresh batteries immediately
when the LO BATT warning begins
flashing. The warning flashes
about 30 days before batteries are
depleted.
Even if the warning does not
appear, you should replace batter-
ies once a year, or before leaving
home for more than a month.
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