This is a general-use controller, most of e-bike / scooter controller can be replaced by it. This controller maybe different with original, buyer should make he can handle it using it. The red and black cable connect the battery, and the other two link the motor, and there are introductions for the others. This product is suitable for electrombile and other electric bicycle. Great accessory for electric bicycles. Condition: and High Quality : 24V Government: 1-4V Power: 250W Brake handle: Mechanical Normally Open Suitable for Electric Bicycle Weight: .140g Colour: black Material: aluminum Package Contents: 1 * Electric Bicycle Controller 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.