This thermostat lock box has a key to prevent tampering, damage and unauthorized adjustment of thermostat settings. Suitable for most thermostats on the market, it can be used in different environments. The clear design maintains visibility and comes with two installation options - punching or nano glue. Overall, it offers protection, security and peace of mind for your thermostat and energy bills. Features 1. Thermostat protection with key: Thermostat protection with 2 keys prevents tampering, damage and unauthorized adjustment of thermostat settings. Keep your controls away from pesky fingers, protect your thermostat and avoid high bills. 2. Fits most thermostats: Suitable for most thermostats on the market. It can be used in home, office, church, school and industrial environment etc. 3. Transparent thermostat lock box is better than plastic transparent thermostat lock box, it will not change color and yellow, and it can maintain the clear view of the inside even after long time use. 4. Punch/no punch: There are two installation methods for punching and nano glue. if you do& If you don't want to damage your walls, you can use nano glue for gluing (no residue), so your walls will always look like new. Specification Material: plastic The color blue Size: 18.7 x 11.4 x 5.5 cm Weight: 310 g Package includes: 1x Thermostat lock box with key