Bluetooth Electronic Digital Door Handles Remote Lock Biometric Door Lock Indoor Use

Label:Yes Color:black Material:Aluminum Zinc Zinc Zinc Zinc Alloy Type:Smart Fingerprint Door Lock Package includes:1Pc Smart Fingerprint Door Lock Power supply:4*AAA battery(not included) Size:1.5*2.7cm(0.59*1.06in)

4-in-1 Unlocking System:No 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), app control (gateway required for WiFi), and 2 backup keys for secure and flexible access. Easy Installation & Low Maintenance:Designed 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 Access:Create temporary passcodes for guests, cleaners, delivery personnel, or Airbnb visitors. Codes expire automatically--no need to share physical keys. Backup options include mechanical keys, USB-C emergency power, and app access to prevent lockouts. Quick Mode Switching & Auto Lock:Easily 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 5--180 seconds, so your home stays protected. Support Chinese, English, Spanish, Portuguese, Vietnamese, Thai, Hindi, Russian, Arabic, French