Honeywell Home Thermostat Lockbox Cover (6-Pack) CG511A1000/6PK - The Home Depot

The Honeywell Thermostat Guard protects your thermostat from unwanted tampering or damage. It mounts easily to facilitate reliable monitoring of usage. The clear plastic cover has a key lock and is compatible with most Honeywell and other thermostats

Highlights

Key lock with inner shelf to prevent tampering

Fits over existing thermostat

Clear plastic cover resists yellowing

Fits Honeywell and most other thermostats