Features： 1、Display Function: The green digital display can accurately judge the battery level and indicate the vehicle condition according to the voltage. 2、Scope of Application: Has wide application, no matter about the battery type is lithium battery, water battery or dry battery. 3、Widely Used: Suitable for all types of electric vehicles, universal for a voltage range from 12V to 99V with automatic identification, improving your using experience. 4、Real Time Display: Real time digital voltage display which is intuitive, convenient, can accurately judge the remaining power and mileage. 5、Cable Connection: Green wire is the Hall signal wire of the handlebar, the red wire is the positive 5V wire of the handlebar, and the black wire is the negative wire. Simply connect wires by colors is not allowed, the wrong connection will cause damage to controller or twist grip. Specification： Item Type: Electric Bicycle Throttle Handle Material: Plastic Weight: Approx.336g/11.9oz Specifications: General Accessories for Electric Vehicles Features: 1. By Turning the Real Time Voltage Value of the Handle, You Can Accurately Determine How Much Power is Left. 2. By Turning the Real Time Voltage Value of the Handle, It Can Accurately Judge Whether the Lithium Battery is Damaged. Package List： 1 x Throttle Handle 1 x Grip 2 x Key