Features: 4 Ways to Unlock: Advanced 4-in-1 Keyless Biometric door lock: Tuya App + Fingerprint + Anti-peep virtual password + Physical Key, fingerprint recognition rate up to 98% and open the door just need 1 second. You can add 20 groups fingerprints and 20 groups passwords, Eliminate the trouble of forgetting to bring the key when you go out. DIY Installation: Fingerprint door lock is designed to fit US standard door, Backset 2-3/8(60mm) and 2-1/8(70mm), door thicknesses from 1-3/8'' to 2-1/8''(35mm -55mm). No wiring and no drilling. Fit both left handed and right handed doors. Boarding & Homeowner: Fingerprint door lock providing your room with an added level of safety, it is simplistic design for office, apartment or other private spaces. Emergency Charging: Keypad door knob requires 4 AAA batteries (not included), According to the frequency of use, it can be used for up to 6 months. It has low battery reminder function, equipped with a USB interface for emergency charging. Highly Security: Control your lock remotely, Real-time access notification and Access Log let you know who comes and goes from anywhere using the Tuya Smart/SMART LIFE App. With Tuya App(BLE), you can share one-time password to your family or friend, no worry about not at home. Specifications: Product Name: Fingerprint Lock Brand: WAFU Model: WF-F4 Color: Black Material: Aluminum Alloy Supply: 4*AAA Batteries(not included) Charging: Type-C USB Unlock Methods: Fingerprint/Password/App/Key Total Capacity: 20pcs Fingerprint/20pcspasswords Senor: FPC Semiconductor Unlock Speed: