4-in-1 Unlocking System: Experience convenience with our smart door knob featuring four unlocking methods: fingerprint recognition (20 users), personalized passwords (20 users), app Bluetooth control (gateway required for remote access), and backup keys. Enjoy automatic locking, passage mode, private mode, and an anti-peep keypad for enhanced security. Comprehensive App Features: Our keypad door knob allows for seamless user management through the app. Easily share access, add members, manage fingerprints and passwords, and create permanent or temporary access codes for family members, guests, deliveries, or housekeepers. Set silent mode for undisturbed sleep, enable passage mode for continuous access, and view historical logs effortlessly for complete control and convenience. Effortless Installation and Reliable Support: Designed to fit most American doors, our fingerprint door lock is easy to install. Enjoy peace of mind with our 1-year Technical Support, making it an ideal cho