Warren,

Do understand what the IR543AH will and will not do. Generally, you must have a Pronto or Handspring Visor w/Omni Remote in order to use the IR543AH. This is because the original IR format used by the IR543 did not contain a house code at all. The house code that was sent over the power line was gotten from the little house code selector on the top of the IR543 unit. What the folks who made the IR543AH did, was to define their own IR commands for the house codes, that the 543AH would recognize. They provide a Pronto .ccf file with the commands. The upshot of all this, is that the typical IR543 compatible remote, will not work with the IR543AH. For folks that don't own a Pronto or Handspring Visor/Omni Remote, if you know someone who does, you could teach the commands from one of those, to a learning remote. If the IR543AH IR codes are anything like the standard IR543 codes, X-10's 8-in-1 learning remote will not be able to learn them. More capable learning remotes usually do not have a problem there.

As for a U.S. supplier, I think that Home automation net was planning on distributing the IR543AH, in the U.S.

For Larry,

What exactly is the UL approval barrier issue? Is it an insurance thing? Surely there is no law against selling non-UL approved devices, here in the U.S.

John Galvin