PREMIUM MATERIAL: The controller is made of material, making it ,durability and wearable WIRE DESIGN: The wires and interfaces are durability,which can low malfunction of long time use. LABEL DESIGN: Each interface has instruction labels on it,making it convenient and easy to insatll. APPLICABLE OCCASION: It is a brushed motor controller,suitable for electric bicycles, scooter, etc. Rated voltage: 24V Rated power: 250 W Matching motor: DC brushed motor 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) Special Features: Replacement car speed controller&Grips model name: Brush Controller+Throttle Twist Grip Throttle Style: striae & Round Suitable for: electric bicycles and scooter colour:Silver Material:Aluminum alloy size:7.3 x 5 x 3.5cm Package Contents: 1 x 24V 250W Motor Brushed Controller 1 x Throttle Only the above package content, other products are not included. Note: Light reflection 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.