Features1Engine has strong climbing ability, low engine running noise, and eliminates tire noise. 2Highquality materials, professional manufacturing, stable performance, high reliability. 3Engine starts more smoothly, the ride is more comfortable, and the driving process is stable. 4Easy to install and simple to detach, providing users a good using experience. 5Thickness of the shell increases, and the heat dissipation is better. Suitable for electric bicycles and electric scooters.SpecificationItem Type: Motor ControllerMaterial: Aluminum AlloyController Box Size: Approx. 10x7x3.2cm/3.9x2.8x1.3inCurrent: 10A-20AConnector Function:1. 3 Phase Lines2. 1 Power Cord3. 1 Hall Wire4. 1 Foot Pedal5. 1 Ordinary Instrument6. 1 Speed Up and Turn7. 1 Burglar alarm power supply8. 1 Burglar alarm signal9. 1 Low-level Brake10. 1 High-level Brake11. 1 Electric Door Lock12. 1Cruise Control13. 2 Learning Lines14. 1 Dial GearThree-speed15. 1 Phase Velocity Meter16. 1 Reverse Gear17. 1 ButtonThree-speedPackage List1 x MotorController