1. Exquisite appearance, rational structure, safe and reliable. 2. Suitable for villa, office, military area and entertainment places. 3. Independent electronic input-output management system: Keypad circuit and tag circuit are insulated. Insure use safely 4. Multi-ways of high-security unlocking methods. 5. Can set one-key opening function: pull up front cover just open door. 6. If input wrong passwords for 3 times continuously, it will stop for 15 seconds automatically. 7. Use 9V extra power when lower power which is safe and convenient 8. Can add door magnetic monitoring function. 9. Reserve many kinds of interface which can connect with home intelligent system. 10. U-design handle is the first choice, maximum protect body.