OK I was able to complete this open item. I have a pool pump that can go out due to nuisance trip of a GFCI breaker. GFCI is mandatory under NEC for pool pumps so I have to stay with it.
I wired a simple outlet inside the pool panel off of one of the GFCI 240VAC legs and the neutral bus on the GFCI breaker. I plugged in a Zooz ZSE38 signal repeater enrolled in my network.
The ZSE38 has a data pid for power source, mains or battery. If the mains fail then the ZSE38 runs off its internal battery. So I just wrote a rule to trigger on battery mode to send me a notification the pool pump power was lost. I also wrote the opposite rule that mains power is restored to the pool pump.
So now I can get an alert if the GFCI breaker trips. Unfortunately my pool panel can't discern this.
For others who need a way to check status of a branch circuit the ZSE38 might be a good way to do that. The added bonus is it acts as a repeater so makes my mesh that much more resilient.
