Controller line interface definition: Battery: thick black (power supply negative) / thick red (power supply positive); Motor: dark white (negative pole of the motor) / dark blue (positive pole of the motor); Ignition switch: thin red (VCC) / thin blue; Indicator light: thin red (indicator power output) / thin black (indicator negative); Brake: thin yellow (brake signal) / thin black (negative power supply) Charging port: thin red (charge input power supply positive) / thin black (power supply negative) Brake light: thin red (power supply positive) / thin black (power supply negative) Governor: thin blue (handlebar signal input) / thin black (negative power) / thin Red (5V positive power supply) Specifications: Item name: Controller and Throttle Screw Grip Rated voltage: DC 24V Rated power: 350W Matching motor: DC brush motor : 1Set Throttle: Dimensions: (Length x Depth) 10 cm x 2 cm / 3. Throttle working voltage: DC5V control signal: 0.8V~4.3V Power display voltage: DC 24V/350W/500W Power display: Normal: above 23V, 3 LED green lights, Half: 23V ~ 20V, LED yellow, Empty: 20V or lower, LED red Rotation angle: 0~70 Working temperature: -20~+50 Fits standard 7/8 inch (22.2 mm) handles Cable length is approximately 59 inches (1.5 m) : 2 (1 Screw throttle handle and 1 normal handle (matching thumb handle)) Electric bicycle scooter screw accelerator with power display, 5 LED battery indicator. Stickers random, 't accept the specified stickers. Colour: as shown Material: composite material Package Contents: 1 * Brush Controller 1 * Throttle Knob 1 * Normal Handle 2 * Key Only the above package content, other products are not included. 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.