Etekcity infrared thermometer is a non-contact tool for surface temperature readings indoors and outdoors. Optimal measurements are achieved from 14.17 inches away. It measures from -58°F to 842°F and displays readings on a bright LCD in under half a second with ±1.5% accuracy. Features include backlighting, adjustable emissivity (0.1–1.0), and dual temperature units. Powered by two AAA batteries, it also has a low battery alert and auto shutoff after 90 seconds of inactivity. For use on non-living objects only.