Infrared Forehead Digital Thermometer, Temporal and Ear, Temperature Measurement for Adults Kids Infants and Baby, Accurate Instant Reading, Fever Alarm with Memory FunctionProduct FeaturesRapid temperature measurement: Simply point and activate, and within 1 second, results can be seen.35 memory temperature readingsMute mode for readings for baby, infants, kids, and adultsTemperature Alarm (default value is 100.4°F or 38°C)Measuring unit: Optional for Celsius ° / Fahrenheit °Multi-function one key operation for body, object, forehead, and liquid temperatureAutomatic off function after 15 secondsMeasuring Range: body mode: 93.2°F - 109.2°F or 34°C - 42.9°CPower by: 3 x AAA batteries (not included)Quick Start Guide1. Take Forehead Reading Temperature: first press the "Measure" button to power on the thermometer. Keep the thermometer about 1 - 4 inches away from the forehead. Press the "Measure" button again and then release, an audible beep is heard indicating the reading has completed, view the temperature reading on the LCD screen.2. View 35 Sets of Previous Readings: press the "Measure" button to power on the thermometer, quick press the "Mem" button to enable the memory mode. Press the "Mem" button again to view each of the 35 saved readings. If the memory has no saved value, this display will show "---M".3. Object/room Temperature: shut off the thermometer, then press "Mem" button for 3 seconds. Keep the thermometer about 1 - 4 inches away from the object. Press the "Measure" button again and then release, an audible beep is heard indicating the reading has completed, view the temperature reading on the LCD screen.4. °F/°C Switch: when the thermometer is on, press the "Mute-unmute" button for 5 seconds to switch between modes