Features1Kit Includes: Bike lithium conversion controller kit contains the 17A 3 modes controller, S900 panel, thumb throttle, power assist sensor wiring, power assist sensor sheet, brake level, suitable for DIY modification, meet all needs. 2Good Heat Dissipation: The controller shell is made of metal with a notch design, which preserves the internal circuitry from thermal overload due to good heat dissipation. 3ABS Panel: The panel is made of ABS material, which is lightweight, sturdy and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit. 4Panel Display: While riding your bike, it will display many useful data on your bike, such as on off buttons, light switches, battery level display and other functions, a display that allows you to keep track of the situation. 5For 350W Motor: 17A controller kit for 350W motor, the main use: DIY electric bike, electric scooter, folding bike, etc., easy to maintain, bike lithium conversion greatly improves the fun of riding, suitable for cyclists who like challenges.SpecificationItem Type: Electric Bike Controller PanelKitMaterial: ABS, Rubber, Aluminum Alloy, MetalGross Weight: 957g / 33.8ozController Size: Approx.95 x 50 x 30mm / 3.7 x 2.0 x 1.2inCurrent: 171AController Speed Setting: 1.1-4.2VApplicableMotorPower: 350WInstrument Interface: sm interfacePackage List1 x S900 Panel1 x Controller2 x Brake Handle1 x 10bPowerAssist Sensor Wiring1 x 10bPowerAssist Sensor Sheet1 x Thumb Throttle2 x Instruction Manual