Advanced Biometrics: Equipped with a biometric fingerprint sensor, this lock prevents duplication and recognizes fingerprints in less than 0.5 seconds. Multifunctional Unlocking: Equipped with four unlocking methods—password, fingerprint, key, and card—to meet your various needs. Low Battery Reminder: Powered by four AA batteries (not included), our lock operates for 6 to 8 months and alerts you when battery levels are low, ensuring you're never caught off guard. 5 Unlocking Modes: Our smart fingerprint door lock has five convenient unlocking methods: fingerprint, card, password, mechanical key, and Wi-Fi connected app for unparalleled flexibility and ease of access. High-Capacity Storage: This lock can store up to 150 password users, 200 card users, and 150 fingerprint users, allowing for ample data storage for family and guests.