Honeywell RTH7400D Owner's Manual page 4

Step 1. Prepare for Installation (Cont)
2. Check that you have everything required for the
installation:
• Two AA alkaline batteries
• No. 2 Phillips screwdriver and standard pocket
screwdriver
• Drill
• Drill bit—use 3/16 in. for drywall; use 7/32 in. for
plaster
• Level (optional)
• Hammer
• Pencil
• Electrical tape
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