Multiple unlocking methods:You can open this lock via APP/Fingerprint/Password/Card/Key, provide you with more choices. 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 durable Aluminum 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. With 4*AA battery, 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 50*50mm lock body (22*160mm), you can fix it on your door which the thickness of the door is 35-50mm., Manufacturer: DRAUXI