Features: Non-Contact Measurement --- Portable digital infrared thermometer temperature gun. Avoid touch skin,convenient measure babys temperature, and no risk for cross infection. Instant Read Thermometer --- Press the measure button,and the result will be out put in one second.No need wait,we can care our baby with the thermometer indoor and outdoor. Large Screen & Temperature Alarm --- The user can freely set the alarm temperature according to his own situation. Large-screen LCD display, white backlight, can be clearly displayed under any light. Convenient Memory Features --- You can store up to 32 sets of readings are recorded for better tracking the changes of body temperature, support clinical febrile diagnosis. It is convenient for babies, kids, children, adults, infants, toddlers. Also has an auto shutdown feature for power saving. Multi-Mode Thermometer --- The infrared thermometer? not only supports forehead function, but is able to take room/object temperature. celsius and Fahrenheit are easily switchable. How to power on/off: Press the M butoon to power on. Press the M button again to power off or automatically power off without operation in 18s. How to measure temperature: Point to forehead with 3-5cm distance. Press the largest measuring button to measure. How to switch measuring mode: Power on the device,and press "-"? button about 3s to switch body/object mode. How to switch celsius / Fahrenheit : Power off the device,press "-"? button about 5s until "Fl" sign appears in left corner,press? "-"? button 3 times until "Fl" turns to "F4" and temperature unit will appear in right corner,switch between celsius / Fahrenheit by pressing "+" button,and power off the device to save. F1: buzzer switch F2: alarm temperature setting F3: temperature offset adjustment F4: temperature unit adjustment Specifications: Color: White Material: ABS Display: LCD Unit: degrees C/ degrees F Human body mode: 34 celsius -43 celsius (93.2 Fahrenheit -109.4 Fahrenheit ) Object mode: 0 celsius -99.0 celsius (32 Fahrenheit -210.2 Fahrenheit ) Battery: 2* AAA battery(not included) Measuring distance: 3-5cm Reaction time: 0.5S Display resolution: 0.1 celsius Memory function: 32 memory values Shut down automatically: 18s Size: 16*4*4cm Package weight: 86g Packing List: 1xInfrared thermometer 1xEnglish user manual