The second screen shows:
the number of patient files,
the number of spirometry tests,
the amount of free memory
and the battery symbol indicating
the amount of battery charge
It will also show you the configuration
icon that brings you to the Configuration Menu
Pressing the right arrow
under this symbol will take you to the Configuration Menu
The third screen is the Main
Screen where you can choose
a function.
You can also navigate the
configuration menu from the main
screen pressing the ESC button
Use the left & right arrow buttons to scroll up and down
through configuration menu.