5-in-1 Unlocking: Supports Fingerprint, Numeric Passcode, IC Card, Traditional Mechanical Key, and Tuya App remote unlocking. Smart App Management: Compatible with the Tuya Smart / Smart Life app for real-time access logs, user management, and temporary password generation. Biometric Precision: Features a high-speed semiconductor fingerprint sensor on the handle for one-touch unlocking in under 0.5 seconds. Virtual Password Technology: Allows you to enter random digits before or after your real passcode to prevent "peeping" or fingerprint smudges from revealing your code. Emergency Power: Equipped with a micro-USB emergency charging port to power the lock if the internal batteries die. Universal Fit: Reversible handle design suitable for both left-handed and right-handed opening doors. Robust Build: Sleek matte black finish with a durable aluminum alloy frame and anti-corrosion properties.