1. Secure and durable, this key lock box with 4-digit code allows you to set your own combination code with 10000 unique options for security.2. This wall mounted lock box is made of aluminum alloy and zinc alloy, sturdy and durable, effectively resisting violent damage.  You can hang it on doorknobs, metal fences, railings, pipes, etc .3. Portable key security fitness lock box can hold up to 5 house keys inside the space when you are traveling or on business, you can put your house key, car key or access card inside.4. With this 4-digit key lock box, you or others can access your keys at any time, suitable for daily activities, friends, relatives, home services, emergency entry, pet sitting and real estate business.5. ABS plastic rain cover, can effectively protect against rain, water and sun. Suitable for outdoor use.