I want to add a UPS for supporting a circuit with an alarm panel and my cable modem and router. These devices are in close proximity to my PLM currently, and might be difficult to move. I have read on this forum that UPS devices are Insteon signal suckers and blockers. What is the best practice to install the UPS without compromising the reliability or integrity of the PLM function?

Insteon sells the Power Line Noise filter. It's about the same size package as the PLM. I bring that up because that package size can block a couple of outlets in a confined space electronics cabinet. It does have an unfiltered pass through in the back like the io modules do so one outlet can be recovered. You can also plug a 1ft pigtail into the wall and the filter module into that.

It's rated for up to 10amp load so the specs of the UPS and any other electronic items in there that don't exceed that.

I'm not sure on how it handles noise vs signal suckers, and which a UPS creates but not sure what the options are. It's a good precaution / insurance to keep things working

Edited Friday at 11:23 AM5 days by paulbates

I have a Insteon FilterLinc with the UPS on the filtered outlet and my PLM in the unfiltered outlet on the front. With no effects I have seen. The FilterLinc is a 10 Amp rated unit and should be fine as long as the UPS has a 10 amp or lower line current rating.

As others have said - filters. If you need more than 10A, an ordinary X10 noise filter does about 90% of the job of the Insteon FilterLinc, and are available at 20A and more.

I put an Insteon filterlinc in my IT room and then I plugged my UPS into the filtered side of it and then everything in my IT closet is powered off of the UPS, except the PLM. I plugged the PLM into the passthrough plug on the filterlinc. This setup has worked perfectly for like a decade.