The new Medline Instant Read Digital Temple Thermometer accurately measure body heat using patented R.A.T.E. technology Rapid Accurate Temperature Establishment . Sensors rapidly track the heat flow generated from blood vessels to the skin's surface and convert measurement to body temperature, meeting accuracy standards. Because it is non-invasive, it is easy to use asleep or awake. It features a large digital display, an audible beep when ready, and a memory that recalls previous temperature reading.FeaturesSensors rapidly track heat flow generated from blood vessels to the skins surface and convert measurements to body temperatureEasy-to-use while asleep or awakeMeets accuracy standardsLarge digital displaySwitchable from Fahrenheit to CelsiusBeeps when ready Memory stores previous reading 1 Each / Each