Honeywell RTHL2510 - Manual (Page 19)

RTHL2510/RTHL2410
17 69-2579ES—01
Battery replacement
Install two fresh AAA batteries when
Lo Batt flashes on the screen. Lo
Batt appears for 60 days before the
batteries are depleted.
Replace batteries once a year, or
when you will be away for more than
a month.
Most settings are stored in non-
volatile (permanent) memory. Only the
clock and the day must be set after
you replace the batteries. Pull at bottom to
remove thermostat
from wallplate.
Turn thermostat over,
insert fresh AAA alkaline
batteries, then reinstall
thermostat.
Set the System switch to Off before removing the
batteries. Otherwise, the heating/cooling system could
remain activated even when batteries are removed.
RTHXXXX
M32707
W/ Aux Not Used
Heat Off Cool Auto On
Fan
M32705