Honeywell VisionPRO TH8000 Series - Manual (Page 22)

Operating Manual
20
About your new thermostat
69-1894EFS—03
ENGLISH
M29364
M29363
Battery replacement
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 warn-
ing flashes about 30 days before batteries are
depleted.
Even if the warning does not appear, you
should replace batteries once a year, or before
leaving home for more than a month. Grasp thermostat and pull to remove
fom wallplate
Insert 3 fresh AAA alkaline batteries