How to Open the Lock Properly: 1.Please dial the CLEAR button before turning on each time. 2.Enter the correct password (the initial password is empty for the first time without pressing any number keys) and dial 0PEN directly. 3.Press the 0PEN button and then pull the cover to open. How to Set the Password Correctly: 1.Open the white cover on the back of the key box cover as the password setting area. 2.Remove the center position screw on the white cover, and the gray part is the password setting button. 3.Use the included gadget to rotate the setting button where the password you want to set is 180 degrees. The triangle symbol arrow is down. For example, the password you set is 2356. Turn the triangle button corresponding to these numbers by 180 degrees. It is recommended that the password be controlled within 4 digits. 4.Important note: Do not lock immediately after the setting is completed. First test, first clear the CLEAR button, then press the password button set by yourself, and finally press the top open button OPEN to see if the lock tongue is retracted If it can be retracted, the setting is correct. 5.Install the white cover back, remember the password you set, and then use it. If you need to reset, repeat the above 5 steps. Specifications: Material: Aluminium Alloy. Item size: 105x65x55mm/4.13x2.56x2.17in. Scope of Application: Key Storage and Management in Homes, Offices, Gyms, Factories, Construction Sites, and So on. Package Included:1 x Key Safe Box.