Feature:1. One-button use of body temperature measurement, which can be used for multiple consecutive measurements.2. One-key measurement, simple operation, no contact required.3. Automatically shut down after one minute of inactivity.4. Data units can be switched between Celsius and Fahrenheit, object and temperature measurements.5. Electronic infrared thermometer with high precision, suitable for infants and adults.6. Large LCD screen with backlight function.Measuring range: 32.0 - 42.2CThree-color backlight: green 32~37.3C, yellow 37.4~38.0C, red 38.1~39.1CPower supply: 2*AAA batteries (NOT INCLUDED)Measuring distance: 0-3 CMDimensions: 12.2*2.9*2.3CMNotes:BATTERIES ARE NOT INCLUDED IN THIS PRODUCTPlease use it under the guidance of the user manual.1. Please confirm whether your battery is installed according to the corresponding positive and negative poles2. Please confirm the temperature measurement mode you are using.In the power-on state, press and hold the Measure button for 5 seconds to switch between object mode and body mode.In the power-off state, press and hold the Measure button for 5 seconds, when the screen displays C (or F)will change C (or F)3. Please measure the forehead of the human body, the forehead measurement is the most accurate valuePackage Included:1* Thermometer