Read and save these instructions – Honeywell RTH6400 User Manual
Page 2
Advertising
Read and save these instructions.
Need Help?
For assistance with this product please visit
http://DIYthermostats.honeywell.com
or call Honeywell Customer Care toll-free at
1-800-468-1502
® U.S. Registered Trademark.
US Patent No. D542,677 and other patents pending
Copyright © 2008 Honeywell International Inc. All rights reserved.
M28400
Quick Reference Card
Grasp and pull to see basic
operating instructions at a
glance.
Battery Holder
Press down and pull to
remove batteries.
Batteries should be
replaced once a year
(see page 15).
NOTE: Remove battery holder; model number is on the battery holder.
Advertising