High security and durability: Outdoor key box is made of high-strength and rust-proof aluminum alloy, which makes it strong enough to resist rust and corrosion. In addition, it can withstand hammer blows, saws and prying. The key safe has a sliding rubber cover that protects the combination button from the weather. It is waterproof, snowproof and dustproof and has a long service life. Combination box of ideal capacity: The wall mounted key cabinet has been upgraded with a secure storage space (internal dimensions approx. 60*90cm to hold up to 5 house keys , or to store small car keys, credit cards, ID cards and other small items. 4 digit free combination: The key box with code is a combination lock with 4 dials, you can set your own access code and change it regularly, it can provide 10,000 personalized combinations, no need to worry about someone breaking your code. The included hinged lid allows for one-handed operation. Easy sharing of your keys: When you're at work or on vacation, asking someone else to enter a code to access a spare key or access card to allow your family, caregiver, real estate agent or babysitter to access the key box is a safer solution than hiding your keys.Ideal solution for AirBNB and rental properties. Universally suitable for apartment buildings, gardens, offices, factories, etc. Easy installation: The key fob case has pre-drilled holes on the back of the trunk, as well as 4 screws and 4 expansion plugs, so it is easy to install on walls and any solid surface without any power supply. Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference, there will be some color difference, the actual object received shall prevail.