Features1Easy to Install: 17A controller adopts high quality wire, durable, convenient and practical. 2Improve Efficiency: Use aluminum alloy shell, good heat dissipation performance. 3Applicable Model: Suitable for 250W and 350W motors, only applicable for KT series products. 4Sine Wave Controller: Can avoid the sudden change of current during commutation, with low noise and stable output. 5Simple Operation: Connect the corresponding connector to the corresponding product according to the controller interface description in the manual.SpecificationItem Type: 36V/48V 17A ControllerColor: As Pictures ShownMaterial: Aluminum AlloyWeight: Approx.308g/10.9ozController Type: Sine Wave ControllerMaximum Current: 171ASpeed Setting: 1-4.2VRated Current: 8ABrake Input: Low LevelController Wire Color Connector Description:1. Black Long Wire: Motor Wire2. Red and Black Single Big Wire: Power Cord3. Red, Blue, Black, Green and Yellow Five Wire Port: Instrument Wire4. Red and Black Wires (Two Connectors): Light Wires5. Red and Blue Wires (Two Connectors): Power off Brake Lever Wire6. Red and Black Lines: Thumb Throttle Wire7. Brown Black Yellow Line: PAS Speed Assist Sensor WirePackage List1 x Controller1 x Manual