The S811 Smart Lock (Black) is a high-security intelligent door lock designed for residential and commercial environments like apartments, villas, and offices. It is known for its "6-in-1" access flexibility, including biometric recognition and integration with smart home platforms like Tuya and TTlock. Product Overview Design: A sleek, minimalist vertical panel made from high-strength aluminum alloy and tempered glass with a matte black finish. Security Grade: Features a high-security lock cylinder and advanced anti-tamper mechanisms. Application: Suitable for various door types (wood, steel, stainless steel, aluminum) with thicknesses typically between 38mm and 55mm. Key Features Multi-Mode Unlocking: Biometric: High-precision semiconductor fingerprint scanner (up to 100–300 users) with <0.5s recognition speed. Digital: Keypad for passcodes with anti-peep technology (allows entering random digits before/after the actual code). Proximity: Supports RFID/IC cards. Smart App: Remote management via Wi-Fi/Bluetooth through the Tuya or TTlock apps. Emergency: Mechanical key backup and a U