Features1Made of high-quality materials, craftsmanship, ensuring good toughness and waterproof performance, provide better protection for the internal circuit and make it more durable. 2Adopt brushless motor controller, stable and mute, and is sensitive to the working state of the bicycle. 3Very suitable for electric bicycles, scooters, etc. 4Easy to install and use, high performance. 5Professionalmanufacturing, stable performance and high reliability.SpecificationItem Type:LCD Instrument ControllerMaterial: aluminium + ABSColor: As picture shownSuitable handle diameter: Approx. 22.5mm/0.9inLine length: Approx. 1.8m/5.9ftController size: Approx. 18x5.2x3cm/7.1x2x1.2inWeight: Approx. 562gVoltage: 24V 36V 48V universalPower: 250-350W universalOn / off button, switch function interface, switch parameter item, switch mode key plus or minusAdjust the button, switch the gear parameter setting interface to plus or minus the parameter value, turn on / off the electric bicycle lightLong press the on / off button to turn on / off, short press the switch button in the power-on state to switch the function interface,Short press the Mode button to switch the gear low / medium / high cycle, long press the Mode button to turn on and off the electric bicycle light, at the same time long press the switch button and Mode button to enter the setting, short press the switch button to switch the parameter items, long press the Mode button to switch Add / subtract, switch to the P18 parameter, press the Mode key to set the 4-digit password, and simultaneously press and hold the power button and Mode key to save and exit the parameter setting.Package List1 x LCD Instrument1 x Controller