Fingerprint Keyless Entry Door Lock with Handle for Interior Doors, Built-in Wi-Fi (2.4 GHz Only), App Control, Self-Learning AI, Auto Lock, 4 AA Batteries, Alexa/Google 0.3-Second Fingerprint Unlocking: Features a large-area fingerprint array to unlock in just 0.3 seconds. The self-learning AI algorithm becomes smarter over time, optimizing for multiple users' fingerprints. With 360-degree recognition, entry is effortless for everyone, including children and seniors. Built-in Wi-Fi for Remote Management: Equipped with a built-in 2.4 GHz Wi-Fi module, the connection is stable and reliable, allowing remote real-time authorization and door lock management. Monitor and control your lock anytime, anywhere, without having to rush home to open the door for visitors or family members. 5-Month Battery with USB-C Emergency Backup: Four AA batteries last over five months for hassle-free security. Note: Based on unlocking the door 20 times per day. Actual performance may vary depending on usage, environment, and other factors. Smart Home Ecosystem Integration: Seamlessly integrates with Alexa and Google Assistant. Add this lock to your existing smart home ecosystem for easy hands-free voice control. Universal Fit and Effortless Installation: Fits standard interior doors and can be installed in just 15 minutes using only a screwdriver. Perfect for bedrooms, offices, storerooms, or garage entries.Note: Not recommended for front doors. Ergonomic, Oversized Design for Interior Doors This smart door lock features an enlarged handle for a more comfortable grip. With a 2.76 in (70 mm) diameter and an extended 6.45 in (163.9 mm) handle length, everyday operation is both effortless and secure. It is perfectly suited for bedrooms, offices, garages, and basements, and is easy to install on most standard interior doors. Note: It is recommended exclusively for indoor use and is not suitable for doors exposed to rain or lacking overhead protection.