1,Thermostat Protective Cover with Key: The thermostat lock box comes with 2 keys, preventing tampering, damage, and unauthorized adjustments to the thermostat settings. Keep unwanted hands off your controller, protecting your thermostat from skyrocketing utility bills. 2,Fits Most Thermostats: This home thermostat box is suitable for most thermostats. This thermostat lock box is designed to fit all shapes and sizes of thermostats, with size of 18.5 x 12 x 5.6cm. 3,Long Lifespan: The transparent thermostat lock box is made of plastic, superior to plastic transparent thermostat lock boxes. It does not discolor or turn yellow, maintaining clear visibility of the interior even after long term use. 4,Easy Installation: The thermostat protective cover allows for installation without removing the thermostat from the wall. Simply drill holes around the existing thermostat and place it in the correct position. You can install this thermostat protective cover horizontally or vertically to suit your thermostat. 5,Helps Control Energy Usage: It can assist in controlling energy usage in restaurants, offices, churches, schools, and industrial environments. 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.