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Ahh yes, thanks for reporting.
Firstly, this does not indicate a problem. That's the good news.
It is a bit of legacy message, but I understand the confusion.
It has been corrected on the GX devices to now say "External Control", but the app still says "ESS".
I will pass this on to the VictronConnect developer to fix.
Additional resources still need to be added for this topic
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