IRONZON Fingerprint Door Handle for Bedrooms - 191F 3-in-1 Fingerprint Door Lock with Keypad, Fingerprint Door Knob for Bedroom with Key, Keyless Entry Door Handle - Black

3-in-1 Unlocking SystemNo more worrying about lost or forgotten keys. Your fingerprint is always with you and cannot be duplicated without permission. This smart door knob supports fingerprint (up to 50 users), passcodes (up to 100 users), and 2 backup keys for secure and flexible access. | Privacy-Focused DesignAll fingerprint and app data are stored locally only, with no cloud upload. When paired with the Tuya Gateway (ASIN: B0DBVDSG9M), you can enable remote control and unlocking via smartphone. Ideal for homes, apartments, offices, bedrooms, and garages. | Easy Installation & Low MaintenanceDesigned to fit standard U.S. doors, with a clear manual and installation template included. Compatible with both left- and right-handed doors. Alkaline batteries are recommended for stable performance. | Convenient Keyless AccessCreate temporary passcodes for guests, cleaners, delivery personnel, or Airbnb visitors. Codes expire automaticallyno need to share physical keys. Backup options include mechanical keys, USB-C emergency power, and app access to prevent lockouts. | Quick Mode Switching & Auto LockEasily switch between Privacy Mode and Passage Mode with a short press. Press and hold for 3 seconds to change lock modes. The lock automatically secures after 5180 seconds, so your home stays protected.