GlowShift’s 10 Color Digital Series Wideband Air/Fuel Ratio Gauge reads and displays your vehicle’s air to fuel ratio from 10.00 to 20.00 AFR down to two decimal places. This gauge utilizes a 12 volt wideband controller that features a 0 to 5 volt digital output, allowing you to connect to virtually any data logging or engine management system. The 10 Color Digital Gauge Series features a Low Profile Tinted Lens with a Digital Numerical Readout for quick readings. You’ll also have the choice of a blue, green, red, yellow, white, teal, purple, pink, amber or orange LED display on a black gauge face.