This product has the reliability and safety of two main characteristics: reliability ?? industrial motherboard design, automatic SMT process, the surface of the three anti-special treatment. Advanced vacuum coating process using international advanced PVD plating process, corrosion, durable;? Security high security lock, using the American standard five tongue lock, anti-disturb function, rotating interior knob. ??? Hotel door locks Features: 1. noble and elegant design style; 2. Full Metal Precision integrated steel manufacturing process without an exposed surface of the lock screw, strong anti-destructive 3. Unique hidden keyhole can not easily be found to ensure maximum security 4. Replace the battery is easy to operate 5. Free hand designed to effectively prevent vandalism 6. The United States ATMEL PHILIPS encryption card or proximity card companies Mifare1 7. Electronic undervoltage alarm function 8. The door did not shut the alarm function, if you're used to function 9. "38 gates equipped with 10. Available colors: Phnom Penh, Chrome, Chrome, gold nanoparticles, etc.