Hello,
I have seen the how-to configure ATO with GHL.
https://www.aquariumcomputer.com/kno...with-profilux/

But I see nowhere how I can protect the water pump if the water level in RODI tank is too low when it's running.
So I can add a level sensor in the RODI tank, but how to configure this ?
I want build a function : when the water level in RODI is too slow, disable the switch channel and send an email alarm, no matter what's going on.
I don't know how to affect 2 functions on the same switch channel, and do this : one the too is always prority on the other.

Thanks.