Advanced 3D Face Recognition: Utilizes infrared technology to scan and unlock in less than 1.5 seconds, preventing spoofing by photos or videos. 6-in-1 Unlocking Methods: Offers versatile access via 3D Face ID, Biometric Fingerprint, Passcode, IC Card, Tuya Smart App, and Mechanical Key. Integrated HD Camera & Screen: Features a 1080P wide-angle "cat’s eye" lens and an internal color display for real-time video monitoring. Two-Way Visual Intercom: Allows you to speak with visitors and remotely unlock the door through the mobile app. Automatic Locking System: Fully automatic mechanism that locks itself once the door is closed, ensuring security without manual effort. Sustainable Power: Equipped with a high-capacity 4200mAh rechargeable lithium battery and a USB-C emergency charging port. Smart Security Alerts: Instant mobile notifications for doorbell presses, low battery, or multiple failed attempt alarms. Universal Compatibility: Designed with a reversible handle for both left and right-opening doors, suitable for thicknesses from 40mm to 120mm.