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. Specification: Model: F4-1500 Color: Black Material: Aluminum Alloy Power Supply: 6v/4 AAA Batteries (not included) Unlock Methods: Fingerprint/Password/App/Key Fingerprint Sensor: FPC Semiconductor Emergency Supply: Type-C Port Fingerprint Capacity: 20pcs Password Capacity: 20pcs Unlock Speed: