Remove the front cover from the wall plate.

TYPE or MODEL Number is located on inside of front cover.

Links to information for Classic 80 Series Digital thermostats:

• Replacement Homeowner's Manual/Installation Instructions.
• Frequently Asked Questions (FAQ's) - 1F80 Classic 80 Series thermostat operation.
• 1F80 Classic 80 Series Features and options.

Quick programming guides for Classic 80 Series Digital thermostats:

• 1F80/1F81/1F82 - 5 + 2 day thermostat models
• 1F84/1F87 - 7 day thermostat models