From inside (document excerpt):
Honeywell RTH6300B Programmable Thermostat. Free PDF operating manual and user’s guide.
RTH6300B Features:
• Separately programmable weekday/weekend schedules
• One-touch temp control overrides program schedule at any time
• EnergyStar® compliant to greatly reduce your heating/cooling expenses
• Large, clear, backlit display is easy to read — even in the dark
• Displays both room temperature and temperature setting
• Removable battery holder for fast, easy replacement
• Built-in compressor protection
Table of contents
About your new thermostat
Thermostat features 2
Programming at a glance 3
Quick reference to controls 4
Quick reference to display 5
Programming & Operation
Set time and day 6
Select fan setting (auto/on) 7
Select system setting (heat/cool) 8
Using program schedules 9
Program schedule overrides 12
Built-in compressor protection 14
Appendices
Battery installation 15
In case of difficulty 16
Customer assistance 18
Accessories/replacement parts 18
Limited 1-year warranty 19
Source: honeywell.com