Smart Door Lock: Enjoy keyless entry door lock convenience via tuya app; fingerprint, keypad passcode,nfc card mechanical key; Perfect for keyless entry door locks, our system ensures effortless control over your home’s security Important First-Step Setup:Before first use, you MUST register an administrator fingerprint. Until an admin is set, ANY fingerprint will be able to unlock the door.The door lock have a USB port for emergency power (using an external power bank), but it cannot be used to charge the lock's internal batteries. Advanced App Management: Seamlessly manage your deadbolt lock via the app: assign permanent/temporary access for family, guests, or deliveries, track entry logs, and enable silent mode for privacy Convenient Auto-Lock Feature: With the auto-lock function, this door knob automatically secures itself after a pre-set time, make your home more security Easy Installation: No drilling/wiring! Our fingerprint door handle fits 1.18"-1.97" thick wooden doors (left/right swing);fingerprint doorknob installs in minutes without professional help Evanshow Smart Door Lock with Knob, Keyless Entry Door Locks with Handle, Fingerprint Door Knob for Bedroom/Front Door/Apartment,Generate Passcode Remotely