Robust Key Box - Made of high-strength aluminum alloy, it is durable and resistant to hammering, sawing, and prying, as well as rust and corrosion resistant. Emergency Key Box - When you forget your keys, or a friend, real estate agent, or babysitter suddenly needs them, they can enter a code to access a spare key or other small items. You can change the code later to keep your keys safe. Easily Change Code - 10,000 custom combinations are available to keep your keys safe. The material and protective cover of this outdoor key box ensure it is corrosion-resistant, waterproof, and dustproof. Large Capacity Key Box - This key box offers ample storage space, accommodating at least five house keys and can also temporarily store small items such as car keys and documents. Easy to Install and Use - This coded key box is easy to install and use, with multiple mounting options. No power required. It can be installed at the entrance of your home, garage, business, or indoor space to protect small items.