Features 4-digit combination lock to ensure security. Enables access for the selected few. Easy and convenient Zinc alloy +ABS plastic Rust free,suitable for outdoor use Ideal for storing keys securely Size: 11*8*4cm Attention Please read the operating instructions carefully before you operate the lock or try to set a new combination of numbers. Instructions 1.Keep the shutter door closed to increase weather resistance 2.We do not recommend use the combination such as A-A-A-A which is easy to crack 3.It is recommend the dials are rotated weekly to keep them moving freely. 4.Please note: The back cover of the lock is plastic and the keyed side (containing the keyed insert) is zinc alloy. To open the key box 1.Slide shutter door to reveal the dials and the door release button 2.Rotate dials to the current combination (the combination of the key box is set at factory to 0-0-0-0) 3.Push the door release button down 4.Pull the door fully open and add or remove the keys 5.Close the door, realign the combination dials to lock the door and conceal your combination 6.Close the shutter door. To set your combination 1.Open the key box (see instruction above) 2.Push the RESET lever on the back of the door to the right and upward. 3.Rotate dials to your desired combination. 4.Push the RESET lever downward and left, back to the original position. 5.Close the door, realign the combination dials to lock the door and conceal your combination 6.Close the shutter door. Package Included: 1 x key lock box 4 x screws 4 x expansion plug 1 x user manual