Features1Complete Kit: Bike lithium conversion controller small kit contains the 17A 3 modes controller, V889 panel, thumb throttle, power assist sensor wiring, power assist sensor sheet, wide range of suits, suitable for their own DIY modification, to meet all needs. 2Applicable: 17A controller small 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. 3Heat Dissipation Function: The controller housing is made of metal with a notch design, which preserves the internal circuitry from thermal overload due to good heat dissipation. 4V889 Panel: 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. 5Waterproof: 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 and making it more durable.SpecificationItem Type: Electric Bike Panel ControllerKitMaterial: ABS, Rubber, Aluminum Alloy, MetalGross Weight: 825g / 29.1ozController 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 V889 Meter1 x Controller2 x Brake Handle1 x 10bPowerAssist Sensor Wiring1 x 10bPowerAssist Sensor Sheet1 x Thumb Throttle2 x Instruction Manual