Features1Bicycle Lithium Battery Modification Controller Kit: Includes 22A dual mode controller, LED900S panel, throttle, power magnetic point, motor conversion line. Suitable for DIY modification, to meet all needs. 2Superior Grade Material: The controller housing is made of metal with a groove design, which not only provides heat dissipation but also protects the internal circuit, avoiding thermal overload. The panel adopts ABS material, lightweight, sturdy, and durable. Exquisite workmanship, toughness, and waterproof performance, providing better protection for the internal circuit and making it more durable. 3Equipped With an Intelligent Chip: Integrates gear shifting, real time cycling data display, and a user friendly backlit design that ensures clear visibility day and night, providing a more convenient and effortless riding experience. The high definition display accurately shows the power, speed, and mileage while cycling. 4Multiple Functions: Displaying a plethora of useful data while cycling. It includes useful features such as power switches, lighting control, battery level display, and more, all in one convenient display screen, allowing you to be fully aware of the situation at all times. 5Applicable Model: The panel has a mounting caliber of 22.2mm, making it the accessory for electric bicycles, electric scooters, and other similar bikes. 6Main Uses: Suitable for 500W motor; Mainly used for DIY electric bicycle, electric scooter, folding car, etc.; Easy to maintain, the bike modification greatly improves the fun of riding, suitable for cyclists who like a challenge.SpecificationItem Type:ElectricBikeConversionKitWeight: 976g/4.4ozMaterial: ABS, rubber, aluminum alloy, metalApplication: Applicable for 500w motor, matching communication protocol for KT products (commonly known as the No.1 communication protocol)Controller Size: 125 x 65 x 40mm/4.9 x 2.6 x 1.6inMaximum Current: 221AController Rated Current: 11ASpeed Setting of Controller: 1-4.2VPackage List1 x Controller1 x Panel2 x Turn Handle1 x Power Assisted Magnetic Disc1 x Booster Cable1 x Motor Line1 x Accessories2 x Instruction Manual