🔐【3 Ways to Unlock】Our door handle lock have three ways to unlock: fingerprint,password and key. Password unlocking uses a 4-8 digit code. Fingerprint unlocking has a 100% fingerprint recognition rate and takes only 0.5 seconds to unlock. You can set up to 100 fingerprints and 50 sets of passwords to share with family and friends.Note that the first fingerprint and password entered are for the administrator. 🔐【Safe and Reliable】with virtual password anti-snooping function and low battery alarm function. With anti-theft alarm function, fingerprint input error for 5 consecutive times or 3 consecutive times to enter the wrong password for many times, buzzer alarm, red light flashing. 🔐【Ultra-Long Battery Life & Emergency Unlock】Our door locks are powered by 4 AAA batteries with a normal standby time of over 12 months. When the batteries run out, the door lock can be temporarily powered via a Type-C connection, then unlocked using a fingerprint, it cannot be charged.Key unlock can be used for emergency unlocking. 🔐【Easy Installation】No additional drilling, no wiring, easy to install. It can be used for both left and right door opening. The chassis has a square design to make the lock fit the door better.As long as the door panel thickness is between 35-50 millimeters and the door hole diameter is within 60 millimeters, this fingerprint door lock is compatible. 🔐【Wide Range of Application】our locks are suitable for home front door, office, bedroom, study and many other scenes to protect personal property security. Meanwhile, we provide customer service with response within 24 hours, if you have any questions about our door locks, please feel free to contact us., Weight: 2.425084882 pounds, Manufacturer: Kerong Smart