LCD Display Device for 5/5.5 Inches Size. This display is compatible only with 36V 12A controller or JIPIN controller. Please confirm the controller model before purchasing. Incompatible controllers may result in throttle malfunction. Display wiring instructions (match wire colors during installation): Red wire: + (power supply voltage) Black wire: - White wire: Controller switch control line Blue wire: RXD signal line Yellow wire: TXD signal line Green wire: Acceleration signal line Note: Voltage setting (24V/36V): Press and hold the center button for 3 seconds to switch. Use up and down buttons to increase or decrease gears. Press up and down buttons simultaneously to enter settings menu. Press center button to toggle settings, use up and down buttons to adjust parameters. Press up and down buttons together to save settings. Material: Plastic Color: Black Package Contents: 1 x Scooter Display Note: The package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowed: +/- 1-3 cm.