Digital forehead Thermometer Non-contact for kids Elder & Adults\r\n SPECIFICATION ➢3 Colors Backlight Indication: Green—normal temperature, 93.2—99.14°F /34—37.3℃; Yellow—slight fever, 99.32—100.4°F /37.4--38℃; Red with “beep” alarm—high fever, up to 100.6°F/38.1℃. ➢Measure Distance: 1—5cm(0.39—1.97 inch) ➢Two Temperature Units for Conversion: Fahrenheit or Celsius ➢Power Supply: DC3V, 2*AAA batteries ( not included) ➢Package Included: 1*infrared thermometer; 1*manual instruction; 1*storage bag \r\n How to measure body temperature? Step 1: Making the distance of thermometer IR sensor and the center point of forehead within 5cm（1.97inch）, but note that don’t touch skin surface. Step 2: Press the turn on/off button. Step 3: Finished measuring, there is “beep” notice and reading.\r\n How to turn on/off the “beep” voice? Step 1: Under the power on state of thermometer, long press the “MODE” button, enter F1 state (unit set); Step 2: Under the F1 state, press the switch button enter F2 state (fever alert set); Step 3: Under the F2 state, press the switch button enter F3 state and through “MODE” button to turn on/off the voice.\r\n Note: if you have any issues about parameter setting, please refer the User Manual page 12-13 first.\r\n ❥Customer Service Customer’s satisfactory is our #1 class priority, if you have any issues about the item, please feel free to contact us. We’ll do our best to help you with it, and also pleasure to receive your great advice.