Posted by a reviewer on Amazon

Heres howto adjust the emissivity1 make sure the unit is off2 press and hold the laser light button3 while still holding the laser light button press the trigger once4 the unit will start turning on at which point you may release the laser light button5 now you can use the laser light button and backlight button to adjust the first number tenths up and down6 press the mode button once to switch to the second number hundredths7 now you can use the laser light button and backlight button to adjust the second number hundredths up and down8 press the mode button again to exit calibration modeto adjust the temperaturethe procedure is the same except for step 1 in which you hold down the backlight button instead of the laser light button before pressing the trigger

Posted by a reviewer on Amazon

Materials are nice not high quality but decent screen is easily seen

Posted by a reviewer on Amazon

The hippih noncontact infrared temperature gun is powered by the included 2 aaa batteries

Posted by a reviewer on Amazon

When you press the trigger on the temperature gun the unit will continuously measure the temperature until you release the trigger

Posted by a reviewer on Amazon

The unit then holds the measured temperature that you just measured on the display

Posted by a reviewer on Amazon

It is also very easy to change the degrees from celcius to farenheit simply just hold down on the mode button

Posted by a reviewer on Amazon

Batteries 2 aaa are included in the package but not installed

Posted by a reviewer on Amazon

That was the most difficult part of the setup process