I have an Insteon On/Off module that I use to operate a plug-in fan while I sleep. I have a UPS that I use for power outages also plugged in to the wall in the bedroom. I want my fan to stay on if the power goes out while I sleep, so I want the On/Off module plugged in to the UPS. Is this the correct usage for a FilterLinc? If so, how do I lay it out? Is it:

On/Off ---> FilterLinc ---> UPS?

On/Off ---> UPS ---> FilterLinc?

Or other?

From the spec sheet - FilterLinc 1626-10
NOTE: FilterLinc should be installed between the offending device (noise-maker or signal-absorbing appliance) and your home's AC outlet.

Another great post:

Where to put the noise filter? - ISY994 - Universal Devices Forum

If you are plugging the On/Off module into the output of the UPS. Most have a filter on the AC input so it will absorb all the Insteon power line messages. If the On/Off module is dual band it may work on Insteon RF if it can read the messages. My UPS is on the AC Line into the UPS to stop it from absorbing the Insteon power line messages.

Also if it is not a pure sine wave AC output on battery but is a stepped or modified output. It may cause some power supplies in modules to not work or possibly damaged. Carefully do some tests while closely observing the module and see if it has issues.

Edited Tuesday at 07:24 PM2 days by Brian H
Add data and fix an error.

Thanks for your help @Brian H . Not sure if it's pure sine wave, pretty sure it is not. Everything is dual band. End result is: FilterLinc plugged into the wall, UPS plugged into FilterLinc, then I pluggeed the On/Off module into the UPS and all is working well.

Edited yesterday at 02:45 PM1 day by gregkinney

Glad it is working for you. I suspect the UPS and filterlinc are not passing the Insteon power line signals and the module is getting through on Insteon RF.

The power supply in the I/OLinc probably can accept an AC voltage if yours isn't pure sine wave. Some do fine others get picky.

Edited yesterday at 10:27 PM1 day by Brian H