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Does such a thing exist (that won’t burn the house down)? Thinking 30 to 40 amps or more if they do them.
Do you want a switch or a breaker?
I've no experience of them but you can certainly get WiFi enabled breakers.
I'd probably be more inclined to be looking at something of that sort (an rcbo if you can find a suitable WiFi one) than a 40a isolater.
I'm guessing you're either running a consumer unit or a single high draw hard wired and switched appliance like a car charger or sex pond at the other end any how so a breaker and rcd (combined or separate) would seem more appropriate.
Yes that’s right, single high draw item. So rcbo would do the job.