I bought a used Controller a while back, and it came with a plug in module that I cant identify.
What is this thing? It appears to do nothing, but turn on a red light when plugged in. And x0 nightlight?
looks like it is a noise filter. if there is something in your house that is interfering with your x 10 signals you pug that into the wall and the item into it and it stops the electrical interference.
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