Features: This display adopts good quality materials, lightweight, rainproof, sturdy and durable.LCD display can clearly show the state and data, backlight enables you to see scree clearly in dim environment, buttons for quick operation, easy to use.The controller is brushless type, working silently and sensitive to the state of electric bike.Easy to install and use, comes with mount for LCD display and suitable for 22.5mm handlebar.Can set the power‑on password, control the lights, cruise and boost. The vehicle speed is divided into gears, the number of gear positions is 3/5/9 gears optional, and turn the handle can be selected to be divided into gears or not.Suitable for electric bicycles, scooters. Note: Each cable is labeled with color for different uses.Red: power positive electrodeBlack: power negative electrodeYellow: power outputBrown: lamp positive electrodeWhite: lamp negative electrodeBlue: indicator signalGreen: signal receive Specification: Material: Plastic + LCD + MetalColor: Shown as pictureOptions: 1#24V-36V; 2#36V-48VPower: 250W/350WLow-voltage Protection: 1#24V-36V: 19V/30V; 2#36V-48V: 30V-41VWaterproof: RainproofController Size: Approx. 8.8 x 5.2 x 3cm / 3.46 x 2.04 x 1.18inchDisplay Size: Approx. 8 x 5cm / 3.15 x 1.97inchWeight: Approx. 332g Package List: 1 x LCD Display1 x Controller Note: 1. The product power factory setting is 8, the basic general market most of the split booster, if the customer uses an integrated booster, set it to 12.2. P13 on the manual is to set the product power, in the case of incompatible booster, the customer needs to adjust to 8 or 123. Please note that the controller model will be sent randomly, and make sure you will not mind before ordering. How to Use Get the product, please be sure to match the phase first:The intelligent identification line to plug up the identification of the motor, identification line is two green lines, plugged on, pay attention to the car overhead up, the motor will automatically run, at this time the direction of rotation of the motor if the correct, then run 10 to 15 seconds to disconnect the identification line, if the direction is the opposite, then disconnect the identification line and then plug back, the direction of the motor will be changed to positive rotation, then run 10 to 15 seconds, disconnect the identification line, the direction of the motor will be changed to positive rotation. Then run for 10‑15 seconds, disconnect the identification line, complete. After completing the identification, identification line to maintain the disconnected state, do not plug back in