Infrared thermometer to measure the temperature of the operation steps: to the measured location, take out the infrared thermometer from the box; Hold the handle of the thermometer with your right hand and push the switch with your index finger, you will hear the sound of the BIBI ground, the power is switched on, and the screen will display the temperature of the object you are facing. Pay attention to the distance coefficient K when measuring, the machine K=D:S=12:1, which is commonly understood to mean that when the measuring range is 12m away, the area of the measured object is a circle with a diameter of 1 meter. If an object with a diameter of 1m is present at a distance greater than 12m, the temperature of the object measured will be inaccurate. To measure the object, point the lens at the object to be measured, press and HOLD the switch to measure, then the SCAN symbol will appear on the upper left side of the screen, indicating that it is being measured, release the switch, and the hold symbol will appear on the upper left side of the screen, which is the temperature of the object to be measured displayed on the screen. To use the instrument in a blurred or dark environment, first release the power switch button, then press the LASER\/BACKLIT button, which will display the laser\/backlit symbol on the screen, this is to press the switch to measure, you will see a small red dot on the object under test, indicating that the area is being measured. When not in use, release the power switch, then press the laser\/backlight button, press No laser once, press no backlight twice, press no backlight and laser three times. In the detection of a surface (such as closed), the fixed point method can be used, and each measurement must be recorded in time. The measurement data is automatically held for 7 seconds, no operation, and automatically shut down for 30 seconds. The backlight turns off automatically after a 10-second delay.