Smart door locks allow for the combination of various authentication methods to suit specific needs, adding an extra layer of security during critical moments. While ensuring everyday convenience, they also provide more reliable protection for specific scenarios—such as living alone at night or being away for extended periods—making your sense of security both adjustable and fully under your control. This smart door handle has 4 unlocking methods:fingerprint recognition,password unlocking,app control unlocking,emergency spare key.Fingerprints and passwords save you the trouble of forgetting to bring your keys, making entry and exit more convenient. The door lock has biometrics and supports App control. Fingerprint and password methods can open the door faster and more securely.APP control function helps you easily share access, manage fingerprints and passwords, unlocking records, automatic locks, keep track of unlock logs,and create permanent or temporary access codes for family members, guests, deliveries, or housekeepers. Equipped with a cutting-edge high-precision fingerprint sensor, our system delivers lightning-fast recognition in just 0.1 seconds and unlocks your door within 1 second for seamless keyless entry. The lock supports up to 100 fingerprints and 100 unique access codes, enabling secure and flexible access management for families, teams, or guests. Designed to fit most American doors, our fingerprint door lock is easy to install.This door lock can be easily installed with a screwdriver in just a few minutes.The door handle continues the classic style design, whether used as a bedroom door lock with code or a keypad door knob for your garage, this lock guarantees long-lasting performance and security for your loved ones. The front and rear handles of this smart lock are made of aluminum alloy, which is sturdy, durable, and not easily damaged. We provide a free replacement service for 12 months (non human caused damage) and lifelong technical support., Manufacturer: ARUNASC