IndestructibleThe wall mounted key box is made of high-quality zinc alloy and sturdy steel, which has excellent resistance to water, corrosion and weather. The outer shell of the key safe is a high-strength zinc alloy casting, which can effectively resist hammering, sawing or prying. You can install it in front of your house, garage door, warehouse and office, you do not need to carry the key to go out. High Security FactorThe key box with code adopts a 4-digit resettable password and has 10,000 custom password combinations. You can set your own password and change it regularly to improve security; the installation is very simple, please take a photo or write down the password on paper after setting a new password. Once you forget the password, the key safe cannot be used.< /p> Wide UsageThe key safe with 4 digit code is large enough (internal size is about 3.94*3.15*1.38 inch) and can hold 8-12 keys, large car keys and other small items. The product includes a key safe, four heavy-duty screws and four expansion nuts to ensure stable installation on any wall. Ideal for Sharing KeysThe external dimensions of the large key box are: 11.0*8.5*4.0cm/4.33*3.35*1.57inch. The wall mounted key safe is suitable for indoor or outdoor use.