Dreambaby Rapid response digital thermometer has display panel turns red if fever is detected and green if a normal temperature. Thermometer used for underarm/rectum and detects rise in body temperature of 32 - 42. 9 deg C. Age group and grade: Ages 0 - 14 years and grades toddler - high school. Extra large easy to read display, oral reading in 8 sec, fever alert light up indicator. Display panel will turn red if fever is detected and green if a normal temperature. Flexible tip for comfort, case for hygienic storage, contains no mercury. Long life battery, celsius and fahrenheit. Temperature range is 32 - 42. 9 deg C. It can also be used for underarm or rectum. Be prepared for any emergency or simply put your mind at ease. Accurate reading in just eight seconds!. Large and easy to read display. Dreambaby Rapid response digital thermometer features extra large easy to read display, oral reading in 8 sec, fever alert light up indicator and is suitable for toddlers - high school children.