Honeywell RTH6400 - Manual (Page 21)

RTH6400 Programmable Thermostat
9 69-22ES—0
About your new thermostat
M28416
Customer assistance
For assistance with this product, please visit
http://DIYthermostats.honeywell.com . Or call
Honeywell Customer Care toll-free at
1-800-468-1502 .
To save time, please remove the battery holder
and note your model number and date code
before calling.
Accessories/replacement parts
To order, please call Honeywell Customer Care
toll-free at
1-800-468-1502 .
Battery holder .................... Part No. 50007072-001
Cover plate assembly* ...... Part No. 50002883-001
*Use to cover marks left by old thermostats.
Model number Date code
xxxxxxx xxxxxxx
M28415