Throttle: ■ Size: (Lx D) 10 cm x 2 cm / 3.9″ x 0.8″ ■ Throttle Works Voltage: DC5V ■ Speed Adjusting Signal:0.8V～4.3V ■ Power display Voltage: DC 24V ■ Power display: ■ Normal: 23V above, 3 Led Green, ■ Half: 23V ~ 20V, Led Yellow, ■ Empty: 20V or less, Led Red ■ Rotation angle: 0 °~ 70 ° ■ Working temperature: -20 ℃~ +50 ℃ ■ Fits standard 7/8 inches(22.2mm) handle bars ■ Cable length is approximately 59 inches (1.5m) ■ Quantity: 2 pcs (1 Twist throttle grip and 1 normal grip (matching thumb grip) ) ■ Electric Bike scooter twist throttle accelerator with power display, 5 led battery indicator. Controller Wires Interface Definition: ■ Battery: Thick Black (Power Negative) / Thick Red (Power Positive) ■ Motor: Thick White (Motor Negative) / Thick Blue (Motor Positive) ■ Ignition Switch: Thin Red(VCC)/Thin Blue ■ Indicator: Thin red (Indicator power output) / thin black (indicator negative) ■ Brake: thin yellow (Brake signal)/ thin black (Negative Power) ■ Charge Port: Thin red (charge input power Positive) / thin black (Power negative) ■ Brake Light: Thin red (power Positive) / thin black (Power negative) ■ Speed governor: Thin blue (Speed handlebar Signal input) / Thin black (Negative Power) / thin red (5V Positive Power)