AYNEFY 12V-99V Throttle Grip Handle Set,Electric Bike Scooter Half Wrist Throttle Grips with LED Display Key Knock

Specifications: Material: ABS + PVC Color: Black Package Weight: approx. 320g Type: Half twist digital data throttle with lock Wire Length: approx. 2m / 78.7" Install Hole Diameter: approx. 2.3cm / 0.9" Working Voltage: Throttle DC1-4.2V, battery level indicator, 12-84v automatically identitify Conpatible With: Suitable for 12V-99V Electric Bicycle Fitment: Fit for 22.2mm diameter handle Package Included:2 x Handlebars (1pc right handle, 1pc left handle grip)  2 x Keys Note: 1. Digital data acquisition and display is more accurate and timely, you can check 'the rest battery level, whether battery is broken the battery quality and it is easy to install.2. When installing the non professionals, please pay attention to the line order, can not be connected to the wrong line, otherwise it is very easy to cause the burning of Holzer and LED tube. 3. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 4. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail. Installation method:With the car key switch, yellow wire connected to the battery +, blue line controller car key switch wire +.The car key switch can not be used directly as the main power switch. Otherwise it will burn the wiring harness! Remember! The key switch is to turn on and off the power supply of the vehicle by controlling the internal electronic switch circuit of the controller.