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pc1966

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A friend of mine has solar panels & inverter and rents out the property. However, the RCD feeding it trips occasionally for no obvious reason (could be local supply disturbances, etc). Those renting it won't bother checking the RCD so is there any simple/cheap device that will periodically say its alive so they know the RCD has tripped?

It is quite remote so would have to be based on mobile network or similar as I'm not sure the tenants would leave the (rather slow, copper phone line) wifi on all the time, etc.

TL;DR Simple way to check power is on using public networks
 
May aswell add soem ring cameras to see what is going on there as well
Aside from ethical/privacy and Data Protection issues, I would feel very uncomfortable about having active cameras in a property I was letting to tenants. That would surely not be right (or legitimate)?
 
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!
 
We've used these on various sites and would do the job. The sim contract is about ÂŁ2 per month.

RF Solutions EZTEXT Remote Control System & Kit,Quad Band GSM
Cheaper than the ÂŁ20 a month one company wanted...
 
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 ÂŁ25.

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

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