[5-in-1 Smart Door Lock]Our smart door handle offers 4 unlocking methods, including fingerprint recognition, password entry(temporary password included), IC card access(2PCS) and key(2PCS)and Tuya app. This smart door knob is perfect for bedroom, living room, , office, flat, rental house. Quadruple security layers adapt to your lifestyle. [Doorbell Function Available]Our smart door locks include a doorbell button, a combination of tradition and technology that ensures you are alerted when your guests are visiting without disturbing your neighbors. [Fingerprint Unlock]advanced fingerprint recognition technology. This smart fingerprint lock can store up to 100 fingerprints,Fingerprint door lock features a fast response time and automatically locks within 3 seconds after closing the door for security. All fingerprint data is stored locally on the device, ensuring your personal information safe [Replaceable Batteries & Emergency Power]This fingerprint door lock uses 4 AAA batteries (batteries are not included), with a battery life of up to 8-10 months. The low battery alert feature ensures you're warned in advance to avoid accidental unlocking. The fingerprint door knob also supports Type-C emergency power(non-rechargeable) [Easy Installation]Our fingerprint door locks are easy to install and fit most doors. Intelligent Nine core functions to meet all your needs Password unlocked Fingerprint unlocked Key unlocked Applications App Management Low Battery remind Virtual Password Emergency Charging Magnetic Card Unlocked Always On Mode Color: Black Material: Aluminum Alloy Package Contents: 1* 2*Keys 1*Instruction Manual 1Set of Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.