Install Batteries - Honeywell RTH5100B Installation Instructions Manual

Step 8. Install Batteries
1. Install two fresh AAA alkaline batteries on the back
of the thermostat as marked on the battery holder.
BACK OF THERMOSTAT
BATTERY HOLDER
M22056
BATTERIES
After the thermostat is mounted on the wallplate,
the thermostat does not require removal from
the wallplate to replace the batteries. Refer to
the enclosed Operating Instructions (69-1722)
for more information on the removable battery
holder.
69-1716 20