Display smart button 2019 Fairford

Nothing wrong just pressed setting button on my display 2019 Fairford and saw a button marked “ smart” what’s it for!
Johndean

Could you be referring to the smart touch button for the battery power selection where you select which battery is the active and which is solar charged or chose smart and let it sort itself out.
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That’s it, must of been a senior moment understand now, thanks for your quick reply, must say it was much easier in “ my day “