Cresta Care infrared ear thermometer “best buy” TH838 Body temperature measurement in 1 second through the ear. This thermometer uses the advanced infrared sensor technology and measures the body temperature through the ear for an accurate – and comfortable measurement. The thermometer is easy to use and we advise you to use the thermometer in babies from the age of 6 months. The CRESTA TH838 has been clinically tested. Ergonomic design with large LCD display.