Honeywell RTH8500 - Features of your Wi-Fi thermostat

Installation Guide
4
About your new thermostatPre-installation checklist
Required tools & supplies
• No. 2 Phillips screwdriver
• Small pocket screwdriver
• Drill
• Drill bit (3/16” for drywall, 7/32” for plaster)
• Hammer
• Pencil
• Electrical tape
• Level (optional)
• Three fresh AAA alkaline batteries