Detecting loss of mains power remotely

[pc1966]

If the wifi can be made reliable you could wire in a Shelly EM and clamp the relevant circuit to have a nice history of the consumption too. It works via the cloud so requires registration for remote access, but with no monthly fees.

That might be of interest, as she has had problems with the inverter before so reporting what is being generated / fed to the grid is more fundamental than if the AC is connected.

Having said that, most folk are not going to check often so by time they look it could have been weeks of outage so really something simple like a SMS alert would be ideal. If it can be made cheap enough!

 

[Strima]

We've used these on various sites and would do the job. The sim contract is about £2 per month.

RF Solutions EZTEXT Remote Control System & Kit,Quad Band GSM

Cheaper than the £20 a month one company wanted...

 

[edexlab]

I did something similar for a customer whose board was hidden behind kitchen cupboards and he was concerned it would go off without him realising for some time.

I used a din rail box 230v relay green and red indicator lamps and a loud buzzer couple of din rail terminals and fuse total cost around £25.

PV supply held relay on and supply to buzzer /red lamp came from the non Rcd side of the board via NC contact.