RS not only house brands theirs but they also get them from China and they don't last long. None of the ones that I've gotten from RS have lasted more than a couple of months and at least half of them die within a week. Lesson: Don't buy anything from RS! X-10 has licensed it's technology to Levitron, RS and a number of other companies so they're all interchangeable but there's a big differrence in the quality of the parts.

Joe