Feature:1. Universal voltage, suitable for 36‑84V electric bicycles or scooters, can automatically identify the voltage.2. Used for electric bicycles, scooters, tricycles and other electric vehicles.3. By rotating the voltage value in real time, you can determine the remaining charge accurately.4. Professional manufacturing, stable performance and high reliability.5. Fine workmanship, provide good usage experience.Spec: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 Controller1 x Meter1 x Half throttle1 x Throttle grip1 x Clip