Features:Easy Operation:You can not only unlock the door with your fingerprint, card, key or the code you set, but also can open the door with tuya APP(BLE), very smart and convenient.Indubitable Safety:Your fingerprint is unique in the world, which guarantee the safety without doubt. Taking advantage of technology of semiconductor and biological characteristics is adopted, which avoids the same fingerprint. What's more, made of durableAluminum Alloy material, its quality is reliable.One-step Accessing:Ergonomic design, easy for you to unlock the door within 1 second by putting your fingerprint on it. It will lock for you automatically, keeping you and your home security all the time.Energy-saving Design:No more worry about pollution or wasting money. With4*AAbatteries(not included), it can be used for half of a year .Versatile Lock:Meeting the standards of most lever lock, equipped with a bag of screws and a lock body, you can fix it on your door.