1. Controller line interface definition: Battery: thick black (supply negative) / thick red (supply positive); Motor: dark white (negative pole of the motor) / dark blue (positive pole of the motor) 2. Ignition switch: thin red (VCC) / thin blue; Indicator light: thin red (indicator output) / thin black (indicator negative) 3. Brake: thin yellow (brake signal) / thin black (negative supply); Charging port: thin red (charge input supply positive) / thin black (supply negative) 4. Brake light: thin red (supply positive) / thin black (supply negative) 5. Governor: thin blue (handlebar signal input) / thin black (negative) / thin red (5V positive supply) 6. Specifications: 7. Item name: Controller and Throttle Screw Grip 8. Rated voltage: DC 48V 9. Rated power: 1000W 10. Matching motor: DC brush motor 11. Throttle: 12. Dimensions: (Length x Depth) 10 cm x 2 cm 13. Throttle working voltage: DC 5V 14. Velocity control signal: 0.8V~4.3V 15. Display voltage: DC 24V/350W/500W 16. Display: 17. Normal: above 23V, 3 LED green lights 18. Half: 23V ~ 20V, LED yellow 19. Empty: 20V or lower, LED red 20. Rotation angle: 0~70 degrees 21. Working temperature: -20~+50 degrees Celsius 22. Fits standard 7/8 inch (22.2 mm) handles 23. Cable length is approximately 59 inches (1.5 m) 24. Electric bicycle scooter screw accelerator with display, 5 LED battery indicator 25. Stickers: random styles, specified styles are not accepted 26. Colour: as shown 27. Material: composite material 28. Package Contents: 29. 1 x Brush Controller 30. 1 x Throttle Knob 31. 1 x Normal Handle 32. 2 x Key 33. Only the above package content, other products are not included 34. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.