I have a number of modules beyond the main unit, so plenty of din sockets for break out boxes. It's all trigger switches - mostly standard floats, but four pressure switches as well. I'm a big fan of redundancy, so I use at least two switches per application. Main ATO uses three, backup ATO uses two, level monitors in the sump, ATO reservoir and AWC buckets are another nine, skimmate container uses two, my dosing containers use five, and so on.
Like the redundant approach. I'm using lots of that with solenoids, heaters, etc, didn't think about the floats as well. Thank you.