The Pro-TEC Key Safe has passed stringent attack testing to LPS 1175 Issue 8. It also has over 4000 possible code combinations for the complete peace of mind of the end user.It has the locking mechanism within the key safe door, freeing up internal space and creating increased capacity for 10 keys on the built-in hook. An ergonomic turn dial, hinge-assisted easy-open door plus 12 easy-press buttons make the safe swift and straightforward to open and close