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. ABS industrial plastic, fashionable and stylish

5. Blue LCD, operation prompt, easy for use

6. Number keypad, initialization key inside, easy and convenient

7. Checking open door records, optional alarm function

8. Low-power alarm to ensure normal use

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