Conceal your valuables and extra house keys with our Secret Safe Indoor/Outdoor Thermometer. The Secret Safe Thermometer is an actual working thermometer with a slide open compartment for hiding small valuables in plain sight. Each Secret Safe has a built-in hook to hang your spare keys and is weather resistant for outdoor use. Each thermometer gives the temperature in Fahrenheit and Celsius and has dual hanging slots for easy mounting. The Secret Safe Thermometer measures 6 1/8" x" 1 7/8" 1" with a hidden compartment that is the same size secret safes are an inexpensive and efficient way to hide keys or small valuable.