3-IN-1 SMART DOOR KNOB:EUERTE Smart Door Knob built with 3 unlock way, including fingerprint unlock, App control, physical keys unlock to meet your diversity needs. Great option for bedrooms,room rentals (Airbnb locations), housekeeping, offices, dormitories, storage rooms, laundry rooms, and general upgrades. 0.1s BIOMETRIC FINGERPRINT ACCESS:EUERTE Finger Print Door Knobs has an advanced 360° fingerprint sensor that takes your door security to the next level, Extremely low false rejection rate, that can be continuously self-improved over time through its built-in intelligent learning capabilities. SMART APP CONTROL:The smart lock offers a free app - TT LOCK APP that allows you could add fingerprints, check unlock records, battery capacity,set auto lock, passage mode and privacy mode to provide a more convenient and secure using.Stores your fingerprint and in-app data locally, instead of uploading cloud to keep your personal information safe and private.es. EASY INSTALLATION AND DURABLE DESIGN:All it takes a screwdriver and can be installed in less than 15 minutes.Premium metallic finish and sturdy Zinc Alloy construction with enhanced security mechanism adds enhanced privacy to your space and protection of family.Sweat & weatherproof design ensures durability under wet hand usage and exposure to the outdoors. SECURITY DESIGN DOOR LOCKS: The biometric door knob with lock blends style and functionality. It can recognize your thumbprint within 0.1 seconds, store 100 fingerprints, and 5s Auto locking feature to ensure your home is safe. Fingerprints are stored locally and not uploaded to the cloud to ensure your family's privacy. Smart Door Knob for Bedroom Simple and Durable