1. Super-stable and low-power consuming circuit design with world leading high technology

2. Main board can drive motor, electromagnet

3. 6V power supply

4. Zinc-alloy front panel, secure and fashionable

5. Noble loop shape LED

6. External start key, internal ADD, delete-key, easy and convenient

7. Low-power alarm to ensure normal use

8. Still, can ensure 150 times open door after the alarm