Special Feature:Keyless, FingerprintLock Type:Biometric, KeypadStyle:ModernController Type:Hand Control, Amazon Alexa, Smart, AndroidControl Method:App, RemoteConnectivity Protocol:Wi-FiPart Number:VNL5612734228441LHItem Weight:4.18 poundsPackage Dimensions:13.07 x 7.4 x 4.49 inchesVoltage:1 VoltsNumber Of Pieces:25, 4Special Features:Keyless, FingerprintBatteries Included?:NoBatteries Required?:NoThis fingerprint lock is suitable for all kinds of doors. Easy for you to install. We take advantage of our previous experience to make it easier, more convenient and user-friendly. Support APP for user management.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 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. With4*AAA battery(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 50*50mm lock body (22*175mm), you can fix it on your door which the thickness of the door is 30-100mm.