2 inch 52mm Car Air / Fuel Ratio Gauge AFR Meter Digital 10 Colors LED Display Black Face 12V - Black

Main Features:
● 2 inch ( 52mm ) diameter gauge.
● Black dial face when ignition is off.
● 10 colors backlights can be selected, and it can memory the setting in the both daytime and night mode.
● Brightness can be selected in 6 different levels, and it can memory the setting in the both daytime and night mode.
● 3 buzzer types can be selected.
● 4 buzzer levels can be selected.
● 3 different open ceremonies can be selected.
● 3 different types indicator movement can be selected.
● Data obtained during driving (peak value and warning value) can be stored up, and the peak value can be reviewed and cleared.

Common Button Operation:
1.There is a button in the backside of the gauge, the remote button is included.They are used to review and clear peak value,change the colors, adjust the brightness, choose the buzzer, set the warning etc.The remote button is same function as the button in the gauge.
2.Short press to switch between different functions settings,long press until buzzer sounds, then enter the setting mode.It will return to normal status when the button is released after 5 seconds.

Power Wire Connecting:
White wire: to 12V wire when ignition on
Red wire: to 12V battery wire
Yellow wire: to 12V wire when small lamp on
Black wire: to ground