Features: [Advanced Anti-Peeping Password]: This smart lock Features a virtual password system that prevents others from peeking. It allows for a password of up to 24 digits, with only 6-11 correct digits needed to unlock the door, providing an extra layer of security. [High-Quality Chip]: The lock is equipped with a high-quality imported chip that offers superior algorithms for faster speed, energy efficiency, and durability. It ensures reliable and efficient operation of the lock. The lock Features an electromagnetic interference shield to prevent unauthorized access using a "black box". It adds an extra layer of security to your home or office. [Encrypted IC Card]: The lock comes with an encrypted IC card, which is ideal for use in special situations, such as when fingerprints are unclear for the elderly or children. It provides an additional secure access method. [Smart Features]: The lock offers a range of smart Features, including homecoming reminders, alarm push notifications, and hijack alarms. It can be controlled via a mobile app, allowing you to generate passwords anytime, anywhere, and set temporary one-time passwords for guests. It also allows for unlocking via USB in case of power outage. [Convenient and Secure]: The lock Features an easy-to-use lift-to-lock mechanism, allowing you to lock all bolts with a simple lift, eliminating the need for a key. It operates on 4 AA batteries (not included) and can store up to 50 sets of fingerprints and 100 sets of cards and passwords. Suitable for doors with a thickness of 40-120mm. Note: This lock only has one language, which is default English and cannot be changed in the app Specifications: Power Supply: 4 AA batteries (not included) Capacity: 50 sets of fingerprints, 100 sets of cards and passwords in total Network: TT lock Bluetooth Power Supply Port: Type-C Door Thickness: 40-120mm Color: Black, White (optional) Panel Size: 30 * 6.8cm/11.8 * 2.7inch Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Packing List: 1 x Outer Panel 1 x Inner Panel 1 x Door Buckle 1 x Lock Body 2 x IC Card 1 x Installation Accessory Package 2 x C-level Mechanical Key 1 x User Quick Guide