Features1Aluminum Alloy: The controller of the electric bike is made of aluminum alloy, which prevents thermal overload of the internal circuitry due to great heat dissipation. 2Stable Performance: This sine wave controller provides stable speed, quiet operation, sensitive braking and direction change control for electric bike. 3Automatic Recognition: Our controller automatically recognizes the phase angle and voltage rating of the electric bike, which makes it more efficient and energy saving than other controllers. 4Easy to Install: The controller's cables and connectors are durable and ensure a low failure rate during long term use. For your convenience, each interface is available in a different color. 5Widely Used: The controller is suitable for electric bicycles, electric tricycles, electric quadricycles, electric motorcycles, etc., as long as the power and voltage match.SpecificationItem Type: ControllerMaterial: Aluminum AlloyWeight: Approx. 808g/28.50ozMaximum Current: 35+2ASpeed Set: 1-4.2VRated Current: 17ABrake Input: Low LevelPackage List1 x Controller1 x Bag1 x Instruction