describe Works with Most Thermostats: There are up to 10,000 possibilities with this thermostat lock box with key. It has a combination lock design that fits most thermostats on the market. You can secure your thermostat from tampering and no longer worry about children changing settings. EASY INSTALLATION: This lock box covers your thermostat and can be locked with the 4 included extension screws. You can also use glue or screws for added security. It installs in just minutes and protects your thermostat from unauthorized access. BRIGHT AND STURDY: Our keyed thermostat lock box is made of acrylic material that is clearer and more transparent than other alternatives. You can clearly see the display without opening the box. It also prevents discoloration and yellowing, making it strong MULTI-SCENE USE: This keyed lock box prevents unauthorized persons from accessing or changing the thermostat. It can be used in various places that require thermostats, such as residences, factories, schools, hotels, restaurants, etc. It improves the compatibility and longevity of your thermostat. WALL PROTECTION: This open thermostat guard not only prevents unauthorized access to your thermostat, it also protects your walls from damage. You can choose from two mounting methods: punch-hole or non-punch-hole. Specification: Product name: Thermostat lock box Product size: (approximately) 19.8 x 11.9 cm/7.8x 4.7 inches Installation: No need to remove the thermostat from the wall, just line it up over your existing thermostat to install and you're done. We offer both perforated and non-perforated installation methods to protect your walls from damage. packing list: Thermostat lock box x 1 notes: Due to lighting effects and shooting angles, the color of the item may differ slightly from the color shown in the picture. There may be errors in product dimensions due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.