It is a contact less temperature sensor, especially designed for employment where the target temperature is not significantly different from the temperature of the environment and in particular when the target temperature is below zero. This device has been specifically designed to work properly at low temperatures where most of similar devices stops to work. In fact the range of temperature allowable reaches -40 degrees Celsius, maintaining measurement reliability. Fields of applications are e.g. automotive, in fact equipping patrol vehicles It’s actually used to measure the road temperature of highways in order improve traffic security.