FREE OF INSTALLATION: With the portable key safe with detachable hanger, you can hang it anywhere including doorknob, fence, railing, pipe, etc. No tools needed. With all included mounting hardware and pre-drilled holes, you can choose to wall mount the Outdoor Key Safe, or mount it to a solid indoor or outdoor surface as needed. HIGH SECURITY: Strong zinc alloy construction gives the key safe with numeric code on the outside a high resistance to hammering, sawing and prying. The 4-digit resettable outdoor code key box allows you to set your own combination with 10000 unique options. Be confident in giving the house keys to your family and loved ones and never worry about locking anyone out. EASY TO USE: Key safe with number code Only four steps to set and reset the 4-digit combination. Instructions are always included. Please note that you will NEVER forget your password, otherwise you will not be able to use and reset the key safe with shackle. CAPACITY: Key box with combination lock offers space for up to 5 keys. You can also save your credit card and USB. [NOTE] As the top inside is occupied by the lock mechanism itself, only items no thicker than 0.5cm can pass through this part. Long, thick objects such as wireless car keys do not fit through. VALUE RESISTANT: Key safe outside is suitable for outdoor use. The environmental protection paint increases resilience. It also comes with a sliding door to hide and protect the dials from dust, rain, snow and ice. A applies to every key safe for outside use