Even when you not at home, you can still unlock through the app.Remote control, real-time management of door opening. Using highly sensitive semiconductor 3D fingerprint sensor The recognition area is larger than the traditional optical fingerprint lock Al bionic neural chip,And memorize common fingerprints, which greatly improves which will recognize the unlocking speed. Key to unlock Emergency mechanical key, can unlock even without electricity Suit for metal door; wooden door; aluminium doors, Manufacturer: YFDGD