Usage Tips:Feature: Temperature Reading:This thermometer can show readings in Celsius or Fahrenheit.(press "setup" for 3 second switchCelsius or Fahrenheit).LED high brightness 3 color backlight,green is normal,Blue is low fever and red is high fever. Easy to Use:Digital LCD Infrared forehead thermometer is easy to use. Just press the button to measure, and the temperature will be displayed in 1 second. The temperature can be read clearly even in the dark Non-contact Measurement:Non-Contact infrared digital thermometer is more safer. It measures body temperature without touching the forehead(measurement distance 1.2-2inch(3-5cm)) Two Temperature Measurement Mode:This digital thermometer is suitable for adults, infants, children and elders. Two temperature measurementmode: body mode (human body temperature), Object mode (water, milk, Room temperature and so on) Accurate Measuring:This forehead thermometer measurement temperature range:32.0-43 (89.6-109.4),Measurement deviation ≤ ± 0.2 degrees.it can record 32 groups measurement values in memory for reference. Please Noticethe Negative and Positive Pole of the 2pcs AAA battery,the inner is Positive Pole,the outside one is Negative Pole(not include battery) Specification: Model:Non-contact digital infrared forehead Thermometer Measuring range:32.0-42.5 (89.6-109.4) Measuring accuracy:≤ ± 0.2 Measuring distance:3-5cm Measuring time:1s Voltage:DC3V Battery:2*AAA battery(not include battery) Product weight:100g Package include1*Forehead Thermometer