use with quick, consistently accurate measurements. Advanced, patented technology measures temperatures with a gentle stroke across the forehead. The Exergen TAT-2000C Temporal Thermometer has been clinically tested for accuracy compared to rectal thermometers and temperature sensors inserted in the heart during course of patient treatment making it the ideal thermometer for use with newborns, infants, children or adults. The Exergen TAT-2000C Temporal Thermometer has patented software, providing arterial heat balance. This unique process determines temperature by accurately measuring the balance between the tissues warming from arterial blood and tissues cooling (warming) caused by heat loss (gain) to the environment.