Advanced Biometric & Multiple Unlocking Methods: Unlock your door securely and conveniently with face recognition, fingerprint scanning, APP, mechanical keys, card, password, or WIFI, offering a range of modern access options Built-in Camera & Two-Way A-udio: Equipped with a built-in camera, peephole, screen, and two-way A-udio, allowing you to see and communicate with visitors directly from the door, enhancing security and convenience Rechargeable Power Supply: Powered by a built-in rechargeable battery, providing a more sustainable and cost-effective solution for long-term use without the need for constant battery replacements Wide Compatibility: Fits doors with a thickness of 40mm to 120mm, and is compatible with various door types, including steel, wooden, brass, and stainless steel, ensuring versatility for different installations Stylish Construction: Made from high-quality aluminum alloy, this lock offers both durability and an elegant appearance, while the reversible handle design ensures flexibility during installation for all door orientations