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9.
To start treatment, press the "I/O"
switch and make sure the orange
LED above the power button is
steadily lit.
10. The battery inside the device is
indicated by the blue LED below
the battery icon.
11. If the battery is empty, the blue
LEDs are not lit and the orange
LED above the "I/O" switch flash-
es.
12. When the battery is empty, plug
the device to the mains outlet
and wait a few minutes before
you switch it on.