Digital outside air temperature gauge. Super bright RED led for daytime viewing; dims gradually as the sun sets for easy night viewing. Temperature range: -99 to 150* F (-72 to 65* C). When temperature drops to 34* F, the display flashes "ICE" five times, then returns to temperature monitoring. 10ft sensor cable included. Mounts in any std 2-1/16" gauge hole. Lifetime warranty to the orignal purchaser, excluding abuse and the sensor.