HAOYI LCD Display Device for 5/5.5 Inches Size. This display can only be matched with 36V 12A controller or JIPIN controller. Please confirm the controller model before purchasing. Different controller models may cause the throttle to not work. Display wiring instructions (please correspond to the wiring color when installing): Red line: + (power supply voltage) Black: - White: Controller switch control line Blue: RXD signal line Yellow: TXD signal line Green: Acceleration signal line NOTE: Instrument setting 24V/36V voltage – long press the middle key for 3 seconds to switch the machine. Single press the up and down keys to increase or decrease gears. Press the up and down keys at the same time to enter the setting interface. Press the middle key again to switch settings. Single press up and down to decrease or increase parameters. Press the up and down keys at the same time to save after setting. Material: Plastic Color: Black Package Contents: 1 x Scooter Display Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.