Digital 2-1/16 Inch Diameter Pyrometer With Red LED Display, 40-1850 Degree F Range And Chrome Bezel Fits Peterbilt, Kenworth, Freightliner And Western It can be programmed to give a high temp alert and will show a flashing light when set temperature is reached to alert you of a possible problem. The pyrometer has an automatic Red digital display with a brightness control and has a range of 40 degrees to 1850 degrees Fahrenheit. It comes as a kit that includes the gauge, thermocouple and dead wire needed for installation and is backed with a lifetime warranty(excluding abuse and sensor).