Feature:1. Application: The throttle grip is suitable for electric bikes and scooters, fits most electric bikes with hall sensor controller.2. Universal Type: Regardless of VRLA, lithium batteries, water batteries, dry batteries, regardless of various types of electric vehicles, 12V‑99V electric vehicles can be used.3. 2.3cm Diameter: The throttle grip handlebar is 2.3cm and it is easy to install on the 2.3cm / 0.9in diameter handlebar.4. Durable in Use: The wires and interfaces are durable, and ensure low malfunction during the long term use.5. Common Wiring Method: The green wire is the thumb throttle hall signal wire, the red wire is the thumb throttle positive 5V, and the black wire is the negative. Please be sure to check the wiring of the controller's function wires. You cannot simply check the color of the controller. Once it is connected incorrectly, it will cause damage to the controller or the throttle.How to Use:Installation Method: Three handlebar wires, the red wire for the positive pole, the black wire for the negative pole, the green for the signal wire, and the yellow one is the power positive wire.Specification:Item Type: Throttle Grip HandlebarModel: S seriesMaterial: PlasticTwist Throttle Grip Diameter: Approx. 2.3cm / 0.9inProduct Weight: Approx. 292g / 10.3ozEfficiency: ≥98%Hall Level: Linear HallWorking Voltage: Thumb Throttle DC 0.8V-4.2VVoltage Adaptation: Regardless of VRLA, lithium battery, and voltage, all can be automatically identified (12V, 24V, 36V, 48