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The RATIO iX3M outside the Water:
The main screen
To switch the RATIO iX3M on, press any button.
The RATIO iX3M switches off automatically after 10 minutes of tatal inactivity.
After diving the RATIO iX3M activates the Sleep mode modality: after 10 minutes of inactivity it switches the screen off and
deactivates all processes which are not useful for the post-diving de-saturation calculation .