The Extech 42500 Mini IR Thermometer provides fast temperature measurements without contact simply by pointing at the object being measured. The built-in laser improves aim by centering the measuring area. Readings are selectable in F or C and the backlit display allows readings in dimly lit areas. The temperature range is -4 to 500F (-20 to 260C). Applications include checking heating and A/C ducts, motors, bearings, tires, radiators, cooking grills, refrigerators and much more.