About this product: High security: Our code key box is made of a strong aluminum alloy, resistant to water, corrosion and bad weather. Perfect for exterior mounted. The protective cover protects the combination dials from unpredictable weather conditions. Large & Storage: The capacity of the large outdoor code key box is large enough (inner size about 11.5*8*4.3CM) to place house, office or other large car keys; And you can also store some little things if needed, such as credit cards, ID cards etc. Two Unlock Modes: This key safe has a 4-digit numeric code and emergency button; It allows to define a maximum of 9,999 combinations. You can set your own passcode and change it regularly to improve security, which makes it difficult to crack. Emergency keys can be more convenient in case you forget the code! Wide Application: This large Key Safe with Code can be widely used in home, garden, office etc. It would be a great helper for any occasion. It allows you to keep and secure your car key while surfing, instead of risking hiding it in the sand/under a rock etc. Easy to Install: This outdoor key safe comes complete with 4 screws and 4 nylon expansion wall anchors to ensure the code key box can be mounted to any solid surface. No fuss or need for extra work to have a box drilled into the wall at much more expense.