Intellitronix's 2-1/16 inch LED Digital Ignition Air Temperature Gauges are designed to measure incoming air, inside air and outside air temperatures and produce microprocessor-controlled accuracy ranges from 50 to 250° Fahrenheit. These gauges contain a black face housed in either a black or chrome bezel with letters and numbers that light up with LED colors for increased clarity. Choose from super bright Blue, Green, Red, or White LEDs. Comes complete with automatic night dimming, sender and in-dash mounting hardware.