Fingerprint Smart Door Lock with Handle Biometric with App Control

🧿【Easy to Install】Smart door locks are designed to fit US criterion doors, Backset 2-3/8''(60mm) and 2-3/4''(70mm), door thicknesses from 1-3/8''to 2-3/8''(35mm -60mm). No wiring, no drilling required. Suitable for left and right-hand doors. No extra hole is needed, install the fingerprint keypad door lock all by yourself with a screwdriver. 🧿【3-in-1】Three ways to unlock this keyless fingerprint door handle: By using fingerprint(20Pcs in total( 1PCS Administrator + 19PCS Normal User )), TUYA smart APP and mechanical key, you can unlock quickly and safely. Suitable for bedroom home office and Airbnb. 🧿【 AI learning and large fingerprint sensor area】RF Semiconductor ( AI Learning function ) Technology allows access in 0.5s with just a fingerprint. What's more, the more you use it， the faster it can read. The smart door knob fingerprint area is φ14mm while some of the others are less than φ12mm. 🧿【Powerful chip】Our biometric door lock uses a Cypress chip, which has huge storage capacity and more powerful fingerprint algorithms. 🧿【Emergency charging】Tenon K1 fingerprint locks use 4PCS* AAA Battery(Recycle Battery highly recommended), When the battery is lower than 4.3V, K1 will alarm until you change the battery and when the battery is totally dead, it also can be charged with a micro USB for back up