Features： 1、The driving motor starts more smoothly and riding is more comfortable. 2、Strong climbing ability, low motor running noise, eliminating tire noise. 3、Suitable for electric bicycles and electric scooters. 4、Professional manufacturing, stable performance and high reliability. 5、The uphill torque of the controller is increased, the power is enhanced, the speed can be faster, the stability of the drive motor is better, and the life of the controller is longer. Specification： Item type: Electric Scooter Controller Material: aluminium alloy Color: As picture shown Size: Approx. 18.2x8.8x4.5cm/7.2x3.5x1.8in Weight: Approx. 545g  Power: 500W Connector function: 1. Red black and orange (power cord + electric door lock cord)-3 heads 2. High storage battery brake cable 3. Low storage battery brake cable 4. Anti-theft power cord 5. Turn handle line 6. Motor for Hall 7. Third gear overspeed 8. Anti-theft alarm 9. Yellow green and blue 3 round head-motor cable (3 pcs) 10. White line black head-learning line (2 pcs) 11. Green line green head-instrument line 12. Orange Blackhead-Cruising Line 13. Black line black head-cruising line 14. Black gray line-white connector-reversing function 15. Blue transparent head-LCD meter 16. Blue white line black line-blue head-jog three speed 17. Pink paired wire: mute function (Total 22 contacts) Package List： 1 x Controller