Features1Kit Includes: Bicycle conversion controller kit contains 25A controller + LCD5 meter, speed adjustment throttle, power assist sensor, motor conversion line. 2Waterproof and Durable: The controller enclosure is made of metal with a notched design, which protects the internal circuitry and avoidthermal overload. The panel is made of ABS material, light, durable, waterproof. 3Multifunctional Panel: When riding a bike, the product will display many useful data on your bike, such as speed and mileage display, switch button, light switch, battery level display and other functions. 4Installation Size and Applicable Motor: Panel mounting diameter is 22.2mm, suitable for electric bicycles, electric scooters and other accessories. It is applicable for 500W750W motor. 5 for Cyclists: DIY electric bicycle, electric bike, electric scooter, folding car, etc. Easy to maintain, the kit greatly improves the fun of riding, suitable for cyclists who like a challenge.SpecificationItem Type:BrushlessMotorControllerKitMaterial: Abs, Rubber, Aluminum Alloy, MetalApplication: 500w750w Motor Matching Communication Protocol For Quinten Products Use (Commonly Known As The No.1 Communication Protocol)Controller Size: 125 x 65 x 40mm / 4.92 x 2.56 x 1.57inMaximum Current: 251aRated Current Of Controller: 12aSpeed Setting Of Controller: 1-4.2vPackage List1xBrushlessController1 x Meter1 x Motor Conversion Wire2 xSpeed Adjustment Throttle1 xPower Assist Sensor1 x Cable1 x Accessories2 x Instruction Manual