1, the first step is to long press the red button in the middle of the key, note that it takes up to 10 seconds to be able to, then the infrared thermometer will automatically restore factory settings.

2, then is to set the calibration, and then it is to be turned to the side of the infrared thermometer, then note that you can see that there is a notch here, as shown in the figure below.

3, then it is to be carried out with a hand or screwdriver to the right side of the force to push a little can be opened.

4, then open after this time you can see inside the battery compartment to see a temperature selection switch, the default position in: degree (degrees Celsius).

5, then you need to toggle the switch to the "℉" position to set the temperature display unit to Fahrenheit degrees ℉.

6, the last step is to close the battery cover, then you can see the display has been switched to Fahrenheit temperature display, calibration is complete.

1, inspection report: is the infrared thermometer specified temperature points for testing, in accordance with product standards to give evidence, qualified or unqualified.

2, calibration certificate: that is, the infrared thermometer specified temperature points for testing, giving the standard temperature and the actual readings of your products against the value.