Features:USB rechargeable design, you don't need to worry its battery.Semiconductor fingerprint heads, BiologicalLive fingerprint recognition, preventing false fingerprints, sensitive and quick recognition.Zinc alloy material, wear-resistant and scratch resistant, antioxidant, long-lasting.Automatically lock, don't worry about forgetting to lock the door.AntiDuplication card, built-in microchip, eliminating the possibility of being copied.Temporary passwords can be set for friend visits, household services, etc.5 unlock ways: fingerprint unlocking, password unlocking, mobilephone APP unlocking, card unlocking, keys unlocking.You can remotely control the status of the lock through your mobilephone, view unlock records, and add/remove unlock fingerprints.When there is an abnormality in the lock, it will send an alarm in real-time through the APP to protects home safety day and night.