This 2 in 1 baby thermometer is designed to take the temperature of both the eara and temple using the intergrated infared sensor. This helps make accurate results in a matter of seconds. The device will also warn you of a fever using a red LED light. It comes with a LCD display that shows these results as well as room temperature in your choice of degrees or Fahrenheit. Why not also use the device to check other temperatures too such as bath water and also baby food, but always ensure that the tip of the device is aimed downwards and never submerge the device into water or liquids.