Range -99 °-150 °F, accuracy within 1 degree F.
Range -76 °-65 °C, accuracy within 0.5 degree C.
Switch on front of gauge to select Fahrenheit or Celsius read-out. Designed to monitor the inside and outside temperature at the same time. "ICE" warning light flashes when temperature drops to 34 °F. Two 10' sensor cables included. Choose red, blue, or green LED display. Mounts in a standard 2-1/16" hole. Limited lifetime maufacturer's warranty. Made in the USA.  

NOTE: This gauge fits Peterbilt and Kenworth models; 2005 and older. Also fits Freightliner, International, Mack, Western Star, and Volvo models with 2-1/16" gauges on the dash.