12 to 1 ratio - increased distance to spot ratio. -40 to 932 degrees F, non- contact temperature readings. Heavy-duty construction. Constant maximum temperature displayed - increased low end temp range. Packaged in plastic case Infrared thermometer ranges from -40 to 932 degrees F, with large easy to read 1" LCD display, scan mode, maximum temperature display, and F/C button. The unit includes a FREE 52220 1" analog thermometer, which comes in a plastic case, easy for storage.