First Ever Red Light and Hub Stopped working C-5 running 2.4.1.167

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Here is the post:

Power Outage Monitor - Ring Range Extender - Rules Please

Ok, you asked, here is my voting rule for my 6 Ring Range Extender V2 devices. Comments: You need to use the driver written by Denny Page (@dennypage). At some point within the past year, the Refresh command broke for the built-in driver. The reason Refresh is needed is that, when the hub comes back up after a power fail, the “switch to mains” event from the Ring Extender will be missed because it comes back online before the hub has booted. The workaround is to have a Refresh action in your…

And then, a subsequent post after @dennypage modified his Ring Extender driver so that the "return to mains" event wasn't missed on power return:

Hub vs reality

Right, but I wouldn’t do such a rule periodically. There is, however, one situation that you could (and, in my opinion, need to) address, namely, when the hub is off for a length of time (due to orderly shutdown during a power fail, before the UPS is drained), or, as you note, during a reboot from firmware update or for some other reason. There was extensive discussion a while back on whether the Hubitat OS could handle this automatically, but Bruce Ravenel (@bravenel) indicated (and convinced…

Any questions, just ask.