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 GripRated voltage: DC 48VRated power: 1000WMatching motor: DC brush motorThrottle:Dimensions: (Length x Depth) 10 cm x 2 cm.Throttle working voltage: DC5VVelocity control signal: 0.8V~4.3VPower display voltage: DC 24V/350W/500WPower display:Normal: above 23V, 3 LED green lights,Half: 23V ~ 20V, LED yellow,Empty: 20V or lower, LED redRotation angle: 0~70Working temperature: -20~+50Fits standard 7/8 inch (22.2 mm) handlesCable length is approximately 59 inches (1.5 m)Electric bicycle scooter screw accelerator with power display, 5 LED battery indicator.Stickers: random styles, don't accept the specified stylescolour: as shownMaterial: composite materialPackage Contents:1 x Brush Controller1 x Throttle Knob1 x Normal Handle2 x KeyOnly 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.