7-3. Up and down buttons
Short press: to scroll through the options in the configuration menu and
to scroll through the photos saved in the image review mode. In
measurement mode, scroll up and down with the navigation buttons to
see a mixture of visible and infrared thermal images in different
proportions.
Long press: in the settings menu option, long press the up and down
navigation buttons to continuously add or subtract values, for example,
when adjusting the emissivity, hold for a long time, the emissivity value
will increase or will decrease continuously.
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