This is a brand new, high quality non-contact infrared digital thermometer temperature measurement. It can be used to diagnose problems faster and more easily in accurate measurements of hot surfaces from a safe distance. The distance to spot size ratio is up to 12:1. Portable infrared thermometer has become an indispensable tool in HVAC trade to check air conditioners, heaters or furnaces. In spot cooling system faults, identify engine misfires and much more.