Hi,
I have a Shelly pro 4PM giving me regular warning messages about "over voltage" even when it's not being operated (it only gets operted via the cloud about once per day).
It's plugged into the the same power as a door access control system.
I suspect there are "power spikes" (back-emf?) being produced by the door access control system's power supply when it energises / de-energises the Maglock.
The warnings seem to come through every time the door access MagLock is operated.
What's the best way to protect the Shelly Pro 4PM from this please? The notifications are driving me nuts!
I assume this could be damaging the Pro 4PM so I should try to protect it rather than just disabling the notifications!?
Any advise greatly appreciated 😃