_every_ instance I have encountered/heard people talk about, where the IR543 does not operate properly, is noise related. It seems to me that the signal put out by the IR543 is weaker than many other controllers, and more likely to be affected by line noise.

The noise is not necessarily generated by something in the same room. It could be a furnace, refrigerator, washer/dryer, etc, a bab y monitor, or just beign on the wrong phase. I would suggest you try to completely isolate the problem. First, take the IR543 to another location and try running it. If it works at your neighbor's or at work, but not at your house, you know it is a noise problem. Then at home start with all appliances/breakers off and turn them on until the proble shows. Then isolate the problem with a noise filter.

Also, make sure you have a coupler/repeater installed so that the signal stays strong across both phases of power in your home.


Joe