The three plugs affected could not have accidentally been physically switched off. In fact the switches on all three are physically difficult to access.

 

Other identical plugs in the house were not switched off.

 

The only common factor is that they were all three in my kitchen.

 

All are controlled using Amazon Alexa.

 

So there is a possibility that an Amazon bug switched off everything in my kitchen.

 

I’ve checked all the firmwares and they are identical to similar devices in my home which did not suffer this almost-extremely-expensive outage.

 

Can you tell me whether timer events are stored on-device? In other words, if I set my switches to turn on as a failsafe, will they do so at the requested time, irrespective of internet connectivity?

  @Wayne-TP Well, the default state feature has just failed me and we haven't figured out why, so I'd like to add several "on" timers each day such that I stand the best chance of not losing the contents of my freezer if the same thing happens again!

 

So can you confirm that the devices must have seen the internet since powering up for timed events to work? I think that's what you're saying. It's a shame there's not some kind of onboard persistent clock that syncs with the internet for this scenario.

 

Incidentally I fully appreciate that using a P110 on a critical device like a freezer which must have 100% uptime is not the correct application for that device. :) That doesn't make it any less interesting that three of these devices switched themselves off unexpectedly for the first time (after dozens of months of being on) just a few days ago.

Many thanks for the clarification. I guess this means that they’re not a good fit for this application. But I knew that already. Thank you!