1. Robust Elegant: Metal construction with daily wear resistance for lasting stability, combining an elegant look with consistent performance in various environments. 2. Intelligent Functionality: Combines precise mechanics with intuitive operation logic for reliable everyday use. A familyfriendly memory system allows effortless code addition/modification while maintaining security. Clear visual feedback for every input ensures error operation. 3. AntiBurglary Mechanism: Precisionengineered metal components with tamperresistant features prevent tool attacks and ensure longterm durability against physical breach attempts. 4. Quick Installation: Tool assembly in 30 seconds – optimized design enables easy mounting without drilling or damaging the door surface. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin