paulbates

You can use it to factory reset the PLM. Pull the PLM out of the wall plug, hold the button as you plug it back in and keep holding until it beeps. Then do a restore modem This is symptomatic of an older PLM that's dying. How old is the PLM? There's a sticker on the back with 4 digits, while you have it unplugged. What are those digits?

How old is the PLM? Any electrical events like nearby lightening strike, brown / black outs? In iox, go to tools/diagnostics/PLM info. What does it say?

Yes.. factory reset then restore device. It also must be in linking mode first. The "running then" is normal for the typical battery monitoring programs

My experience with Insteon sensor, battery only devices, especially after long periods of use, is to factory reset them, right-click in iox and pick "restore device". Doesn't always work but easy to try and frequently fixes it

I guess I thought it was required, I always have had it. We need more info; was it working at some point and stopped? What happened?

If your android app is UDM (Universal Devices Mobile)... then yes, you need to renew your portal subscription

Also factory reset the one that won't add, sometimes that wakes them up

How old is your plm? If you're not sure, there's a sticker on the back with four digits, post those digits

Lake Michigan near Petoskey!

I get it... we spend a lot of our time camping around the Great Lakes, in fact we're out now 😉

Hot and cold temps are a factor... but my experience with those is the frequency of activation... the more they're used, the faster the batter dies. My experience with these and Insteon motion sensors is that when the batteries run low or dead they get flaky, it helps to factory reset them and right click on them in iox and pick restore device.

I would also pick a device that's in a scene with several other devices, right click and pick "restore device"

The new plm may have gotten 'confused' by the initial bad restore. I would try: Factory reset the PM: Unplug the plm from the wall, press and hold the set button while plugging it back in the wall, keep holding it until it beeps Unplug the ISY, wait about 10 seconds, plug back in, give it a couple minutes to fire up Try to restore the backup and then restore plm

A possibility is that the PLM was so far gone that when you backed up, you backed an empty and/or corrupted PLM data table.... and that's what was restored. Do you have a good backup from before the problems started? Restore that and then restore the PLM, retest

Is there an outlet that is between the buildings, or any electrical lines to something like a lamppost where an outlet could be added and a dualband device like a lamp module could be plugged in and put in a weatherproof box? Dual band lamp type modules will repeat the insteon traffic in both directions. If the power drop is close enough to both buildings it's plausible that it will work.