Power outage on one board

I’m struggling to find a simple solution.
My Scenario, I have barns each with their own fuseboards. I want a simple solution to know if one of the boards is tripped. I dont want to go opening the board to add anything. Im hoping to use maybe a simple device plugged into a power outlet from said board, i.e a smart plug, an ESP device or perhaps a camera connected to the board to report back its gone offline.
I have tried a camera with the “unavailable” attribute but that does’nt seem to work.

Can you use something that is WiFi and use ping to detect if its powered or not.

Yes I could! However would that cause unnecessary overhead?

It would be pretty nominal and would solve your problem. I have a dozen ping sensors and don’t notice any overhead.

That did the job. Thank you