Welcome to the store! 3-in-1 Smart Lock: Unlock with fingerprint, password, or mechanical key. Supports scrambled code entry to prevent peeping, suitable for door thicknesses of 30-65mm. Fast Fingerprint Identification: Built-in latest fingerprint identification module, identifies fingerprints within 1.5 seconds. Stores up to 100 fingerprints. (Only identifies live fingerprints, rejects fake fingerprint films.) Low Voltage Alarm: Low power consumption function. When the voltage is lower than 4.8V, a low voltage message will remind you to replace the batteries. Emergency Power: If the battery in your smart door lock is low, you can temporarily charge it with a power bank, phone charger, or any power source with a Micro USB port. Easy to Use: Makes your life safer and more convenient. Supports up to 100 fingerprints and 100 password sets. Identifies dry and wet fingerprints, suitable for children and the elderly. Item Type: Smart Door Lock Material: Zinc Alloy Color: Black Battery Type: Requires 4 AAA batteries (not included) Unlocking Method: Fingerprint, Password, Mechanical Key Unlocking Time: 1.5s Number of Fingerprints: 100 Number of Passwords: 100 groups Scope of Application: Perfect for homes, offices, hotels, apartments, etc. Includes: Front handle, Rear handle, Lock tongue, D buckle plate, Buckle lock, 2 x Keys, Square strip, 2 x Headless screws, 2 x Connecting pipes, 2 x Front and rear panel locking screws, 4 x Self-tapping screws, 1 x Battery cover replacement screw, 1 x Screwdriver, 1 x Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!