Taking a forehead temperature is as simple as pointing and pressing a button. Measure body temperature 32°C to 42.9°C (89.6°F to 109.2°F) and object temperature 0°C to 180°C (32°F to 244.4°F). Response time less than half a second . Measuring distance is 3 to 5cm. Requires 2 "AAA" batteries (not included).