Accurate - Our laser thermometers have an emissivity range of 0.1 to 1.0 for accurate readings on different surfaces and conditions. For best results, the reader should be 14 inches from the object. Versatile - Use this handy laser temperature gun at home and in industrial settings. Check oven or griddle heat, complete HVAC projects, measure the temperature of any vehicle engine, and more. EASY TO USE - Just scan the surface of your object, press and hold the trigger of the IR thermometer, and release to get real-time temperature readings anywhere between -30ºC and 380ºC). Bright Display - Each IR temperature gun has a large backlit LCD screen so you can easily read the temperature in the dark. And with 2 AAA batteries included, powering the thermal gun is a piece of cake. NOT FOR HUMANS - This temperature gun thermometer is not intended for human/internal body temperature use. It's designed for home repair, cooking, HVAC and automotive use, and other DIY jobs.