-13-Basic OperationPlease make sure unit connect SWCwire first, and then press the wheelbutton, then press the correspondingbutton on screen.To cancel input setting, please pressbutton.High-z means high-impedance.Tap to reduce the magnitude ofvoltage. This key for avoid thatvoltage is too high that the carsystem can not differentiate theinput key set for some car.Low-z means low-impedance.Tap to increase the magnitudeof voltage. This key for avoidthat voltage is too low that thecar system can not differentiatethe input key set for some car.Illumination colorSelect the message will show as:Touch to adjust the RGB level for allbuttons and display. Tap auto icon thecolor change automatically.Wall paperPress to select wallpaper as:Version aboutPress to show the information forsoftware. Press to show QR cord thatto download the control APP.AUDIO SETUPTouch the icon to turn to audio qualityadjustment.To select as : Standard -> Classic-> Rock -> Pop -> Jass -> Electric.To adjust audio effect for your car.Subwoofer:To turn subwoofer on or off.Loudness:To turn loudness on or off.Loudness Center Frequency:To select loudness frequency.To adjust the volume level as: Disc, USB,Card, Radio, AUX and AV mode.Note: In Video model, press SEL to adjustEQ as the color effect as:Brightness -> Contrast -> Hue ->Saturation -> Sharpness.