Feature:1. Digital Key: The lock uses a physical digital key with stable performance and flexible and convenient use.2. Custom Password: The password is deleted and formulated by the user to minimize security vulnerabilities.3. Two Unlocking Methods: Password unlocking and key unlocking. Fully mechanical password keys, anti‑card door tongue, and more secure anti‑theft.4. C Reset Button: When the password is entered incorrectly, you can press the C button to re‑enter it. Anything other than the C button can be set as a password.5. Installation: The installation is convenient, and the old spherical door hole can be used during installation without additional opening.How to Use:The factory management password is 123456, and the unlock password is 123. Please change the management password and unlock password as soon as possible after installing the lock to ensure safety. For detailed modification steps, please read the instructions carefully.Specification:Item Type: Door LockMaterial: Zinc AlloyBattery: 4pcs AA batteries (excluded)Factory Unlock Password: 123Factory Management Password: 123456User Capacity: 10 groupsUnlocking Method: Password, keyBolt Size: Approx. 60mm/2.36in or 70mm/2.76in (manually adjustable)Suitable for Door Thickness: Approx. 38-48mm/1.5-1.89inLow Battery Reminder: 4.8V low voltage alarm reminderDoor Opening Direction: Regardless of left and right directions Package List:1 x Door Lock1 x Outer Door Lock1 x Lock Tongue1 x Lock Box1 x Lock2 x Key10 x Screw1 x Rear Cover3 x Nut Tube1 x Dimension Figure1 x Manual