Keywords: Selling point: 1. Display speed, mileage, battery level, and power 2. It is possible to adjust the starting softness and hardness of the car, 3. Set the power on password, control the car lights, cruise control and assist, divide the speed into gears, select 3/5/9 gears, and choose whether to shift or not to shift the handle, etc Product parameters: Product: Electric Bicycle, Mountain Bike, Scooter, LCD Instrument Controller, Battery and Speed Display Style: B/C Voltage: 24V/36V, 36V/48V Power: 250W/350W Undervoltage protection: 19V/30V, 30V/42V Controller size: 88 * 52 * 30mm LCD size: external dimensions 80 * 48 * 48mm, display screen size: 52 * 38mm Installation handle diameter: 22.5mm Product List: LCD Display Screen * 1, Controller * 1 When you receive the product, please make sure to match the phase first: plug in the intelligent recognition line to identify the motor. The recognition line is two green lines. After plugging in, turn on the machine. Be sure to keep the car overhead, and the motor will automatically run. If the direction of rotation of the motor is correct, then run for 10-15 seconds and disconnect the recognition line. If the direction is reversed, then disconnect the recognition line and plug it back in. The direction of the motor will change to forward rotation, and then run for 10-15 seconds, disconnect the recognition line, and complete the process. After completing the recognition, keep the recognition line disconnected and do not plug it back in