Features a black glass face with digital display that only becomes visible once the ignition has been turned on. Max. ratio display number is 19.5

Gauge Diameter = 52mm

Example of how the "Amber Series" functions:

Upon starting your vehicle the display initially shows you a vehicle voltage reading. After approximately 50 seconds the display switches over to the air/fuel ratio. Should the air/fuel ratio be lower than 10 or higher than 20 for more than 3 seconds, the display will begin to flash with the current ratio.  In 10 minute intervals the display reverts back to show you a vehicle voltage rating that is displayed for 50 seconds before the air/fuel ratio is once again shown. During the 50 seconds that the voltage # is displayed you are still able to monitor the fuel/air ratio by watching the LED bar lights.

18 - 19.5 = 4 Red LED´s 
13 - 17 = 10 Yellow LED´s 
10 - 12.5 = 6 Green LED´s 

Should the vehicle voltage at any point drop below 11V the display with begin to flash with a red warning light and the current voltage will be shown. The voltage display mode will remain until the problem has been corrected,

Includes Installation Hardware