Feature: 1. High‑quality materials, professional manufacturing, stable performance, high reliability. 2. Engine has strong climbing ability, low engine running noise, and eliminates tire noise. 3. Thickness of the shell increases, and the heat dissipation is better. Suitable for electric bicycles and electric scooters. 4. Made of aluminum alloy material, with strong toughness, sturdy, durable and long service life. 5. Engine starts more smoothly, the ride is more comfortable, and the driving process is stable. How to Use: Each interface has a function description, and the function can be realized by connecting the socket according to your own needs. Specification: Item Type: Motor Controller Material: Aluminum Alloy Controller Box Size: Approx. 12.5x8.5x4.5cm/4.9x3.3x1.8in Current: 20A-25A Connector Function: 1. 3 Motor Phase Wires 2. 2 Power Cords 3. 1 Anti-theft Alarm 4. 1 Anti-theft Alarm Signal 5. 1 Ordinary LCD Instrument 6. 1 Dial Gear Three-speed 7. 1 Electric Door Lock 8. 1 One-line Lcd Instrument 9. 1 Speed Up to Turn 10. 1 Hall Wire 11. 1 Low-level Brake 12. 1 High-level Brake 13. 1 Reverse Gear 14. 1 Smart Learning Line 15. 1 Cruise Control 16. 1 Jog Three-speed, Four-speed Package List: 1 x Motor Controller