This electric bicycle controller set has universal voltage, suitable for 36‑84V electric bicycles or scooters, can automatically identify the voltage, is helpful for you. By rotating the voltage value in real time, you can determine the remaining charge accurately. Used for electric bicycles, scooters, tricycles and other electric vehicles.Feature:【APPLICABLE FOR】This electric bicycle controller set has universal voltage, suitable for 36‑84V electric bicycles or scooters, can automatically identify the voltage.【VOLTAGE DISPLAY】By rotating the voltage value in real time, you can determine the remaining charge accurately. Used for electric bicycles, scooters, tricycles and other electric vehicles.【FINE WORKMANSHIP】This electric bicycle controller set is processed by professional manufacturing, stable performance and high reliability.【EASY TO INSTALL】This e-bike controller set has simple installation, no need complicated tools, convenient for using. The driving motor starts more smoothly.Specification:Condition: 100% brand newItem type: Electric Bicycle Controller SetMaterial: blendColor: As picture shownWeight: Approx. 497g Installation hole diameter: Approx. 22.5mm/0.9in36/48V 250/350W universalLine color definition:1.Red power input2.Yellow power output3.Blue signal sending4.Green signal reception5.Black power supply negativePackage List:1 x Controller 1 x Meter 1 x Half throttle 1 x Throttle grip 1 x Clip