This thermostat lock box features a key to prevent tampering, damage, and unauthorized adjustment of thermostat settings. Suitable for most thermostats on the market, it can be used in various environments. The clear design maintains visibility and comes with two installation options – drilling or nano adhesive. Overall, it offers protection, security, and peace of mind for your thermostat and energy bills. Features: 1. Thermostat Guard with Key: Thermostat cover with 2 keys prevents tampering, damage, and unauthorized adjustment of thermostat settings. Keep your controls away from prying fingers, protect your thermostat, and avoid high bills. 2. Fits Most Thermostats: Suitable for most thermostats on the market. It can be used in homes, offices, churches, schools, and industrial settings, etc. 3. Clear thermostat lock box is better than clear thermostat lock box made of plastic, it will not change color and turn yellow, and it can maintain the clear visibility of the inside even after long-term use. 4. Drilling/No Drilling: There are two installation methods for drilling and nano adhesive. If you don't want to damage your walls, you can use nano adhesive for bonding (without residue), so your walls will always look like new. Specification: Material: Plastic Color: Blue Size: 18.7 x 11.4 x 5.5 cm Weight: 310 g Package Includes: 1x Thermostat Lock Box with Key