You can monitor up to four sensors directly from the main boat screen, providing instant data without opening the "Sensors" tab. On the main boat screen, you should see a "+ Add sensor" button. Click on it, and you should see a list of all your sensors.
You can select any four sensors. Once you select four, other sensors will become "greyed out," meaning you cannot select additional sensors. You can access the "Favourite Sensors" menu at any time by clicking "Details" → "Favourite Sensors".
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