1.【4-IN-1】This 4-in-1 smart keyless entry door lock offers versatile unlocking methods including fingerprint recognition, password entry, app control via Bluetooth, and traditional emergency keys. 2.【Upgrade Fingerprint Sensor & 0.5S Recognizing】Say goodbye to false rejections and enjoy effortless access; The fingerprint scanner is fast and accurate, recognizing your prints in less than a second 3.【Secure and Durable】: Made of strong aluminum alloy, this keyless entry lock ensures reliable home security. It supports up to 50 user codes and fingerprint access for family members, plus one-time passcodes for guests.you can use this deadbolt smart lock as a fingerprint lock, keypad locks, door lock with key or door lock with code,for bedroom door lock,interior door lock,front door lock and so on. 4.【Easy installation】Install this smart door lock in less than 10 minutes using just a screwdriver., no drilling and no extra costly locksmith. Adjustable Backset 2-3/8″ or 2-1/8″, door thicknesses from 1-3/8'' to 2-1/8''. Fit both left handed and right handed doors.( smart lock comes with video tutorials and all tools ) 5.【After-sales support】.Provide customer service that responds within 24 hours, if you have any questions about our door locks, please feel free to contact us, 1 year free refund (replacement) and lifetime technical support.