Description:  Multi Unlock Method: You can open the door by fingerprint+ password+ key/fingerprint+ password+ APP, which is intelligent and convenient.  Big Capacity: The fingerprint capacity is so large that you can store 50 fingerprints. It is convenient to store the fingerprints of your family or close friends.  Super Safety: This door lock will provide you with superb security, taking advantage of technology of semiconductor and biological characteristics, which avoids the same fingerprint.  Fast Unlock: Ergonomic design, fast for you to unlock the door within 0.3s by putting your fingerprint on it. It will lock for you automatically.  Simple Installation: No cord and no professional are needed. It fits most doors that uses lever door lock and is applicable to both left and right handle.    Specification:  Material: ABS, metal  Color: Black, Silver  Size(Length x Width on both sides): About 15x6.5x2.8cm/5.9x2.55x1.1inch  Types: Common Version, APP Version  Unlock method: Password+ fingerprint+ key/password+ fingerprint+ APP  App: TT Lock  Interface: USB  Recognition speed: 0.3s  Fingerprint capacity: 50  Working temperature: -20-60℃  Suitable door thickness: About 30-55mm/1.18-2.16inch    Package includes:   1pc x Fingerprint Smart Lock  1pc x Installation kit  2pcs x Key  1pc x User Manual