Multi-use Infrared Thermometer ideal for automotive, industrial, HVAC, mobile AC and home use. Temperature range from -26°F to 752°F (-32°C to 400°C) with quick-change between Fahrenheit and Celsius. Laser beam indicates what object is measured for extreme accuracy. Near-instant response time of 500ms allows for quick measurement on static and dynamic objects. User-set alarm range beeps when measured temperature is outside pre-set minimum or maximum parameters. A bright LCD clearly shows temperature and is powered by the included 9-volt battery.