1. 3 ways to unlock: Advanced 3-in-1 keyless biometric door lock: fingerprint + anti-peep virtual password + physical key, 50 fingerprints can be entered, the smart lock with keypad also uses the latest biometric fingerprint access technology, with an accurate recognition rate of up to 99%, and it only takes 0.3 seconds to open the door. Two mechanical keys are also included for emergency use. Our door lock saves a lot of unnecessary trouble 2. Simplified installation: The fingerprint door lock is designed to fit US standard doors, with a rear distance of 2-38 inches (60mm) and 2-18 inches (70mm), and door thickness from 1-38'' to 2-18'' (35mm-55mm). No wiring and drilling required. The lock can be installed quickly and easily with just a small screwdriver, and the latch can be adjusted 3. Low power consumption for emergency charging. 4 AAA batteries are provided (not included). Depending on the frequency of use, it can be used for up to 12 months, with a low battery reminder function. Emergency USB charging port and normal key unlocking method provide double protection 4. Safe and reliable: The fingerprint door lock provides a higher level for your room, it is a simple design for offices, apartments or other private spaces. The smart door lock with handle is made of zinc alloy material, which is anti-corrosion, stylish and elegant, with a simple and stylish appearance, providing a higher level of security and privacy protection for your house, apartment, office, hotel or any other personal space