See my thread when I accidently plugged in a heater with no temp controller into my surge protector and tank got to 92 degrees. Make sure you double check stuff and make sure apex alarm is actually on.
I changed to a temp controlled 600w finnex plugged into a BRS inkbird
I unplugged the finnex heater from my apex to my surge protector. I'm looking at work and I didn't get a notification of it being out of range. Surely this can't be right?