1Strict quality control and quality assurance, high safety factor, can be used with peace of mind. 2Highquality materials, professional manufacturing, stable performance, high reliability. 3Engine has strong climbing ability, low engine running noise, and eliminates tire noise. 4Thickness of the shell increases, and the heat dissipation is better. Suitable for electric bicycles and electric scooters. 5Engine starts more smoothly, the ride is more comfortable, and the driving process is stable. Item Type: Motor Controller Material: Aluminum Alloy Weight: Approx.495g/17.5oz 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 High-level Brake 12. 1 Reverse Gear 13. 1 Smart Learning Line 14. 1Cruise Control 1 x MotorController