Smart Door Knob - Fingerprint Unlock

This smart door knob offers a convenient and high-quality security solution for your home. It features fingerprint unlock, app unlock, and key unlock options. - Fits most standard doors with a hole diameter of 1 inch (25 mm) and door thickness of 1 3/8 - 2 1/8 inches (35-54 mm). - Offers a 99% recognition rate with 100% local data storage. - Read speed is less than 0.5 seconds and can store up to 20 fingerprints. - Durable design with 15,000 lock & unlock times lifespan, IP54 weatherproof & dusted rate, and 8000N lock case strength intensity test