I gave up on these. Not what you want to hear I’m sure. Make sure they’re setup properly and set to the right type of device in Fusion.
I have a pan under my water mixing/ATO/AWC station and I accidentally drenched it a day ago when I dropped the hose in it. Nothing. Nada. No alarm. It’s “supposed” to automatically close down the ATO, AWC, and about 5 solenoids via Apex. It did nothing.
We have a ring alarm system so I just use those and they’re 100% reliable so far (They exist under every sink, bathtub, fixture, hot water heater, fish tank on sides and back, under cabinet, etc.
Sucks the system isn’t automated but the Neptune leak sensors were (and apparently still are) notoriously bad…and known to go bad.
Doing a weekly emergency test check is probably smart if you actually do get them working.