The Exergen TAT-2000C Home Model measures temperature with a gentle scan across the forehead. This non-invasive design makes temperature checks comfortable for newborns, children, and adults. During each scan, the thermometer takes multiple readings and displays the highest temperature detected. Its patented Arterial Heat Balance system adjusts for room temperature and natural skin cooling to provide a consistent reading. Originally developed as a temporal artery thermometer, this technology continues to be used in professional healthcare settings and homes worldwide. How to Use: Place the probe flat in the center of the forehead. Press and hold the button. Slide straight across to the hairline. Touch behind the ear. Release the button to see the temperature. The TAT-2000C features silent mode for nighttime checks for baby thermometer for infants and stores the last 8 readings for easy tracking. This is the home and clinic version of the professional Exergen Temporal Scanner used in healthcare settings. Powered by a 9-volt battery (included), it features a rear sliding battery compartment for easy replacement. Mercury-free and designed, packaged, and assembled in the USA.