The CR230 is in the approval process, I was told it should have approval in about 5 to 6 weeks. They expect the CR134 and 234 to be approved in 3 to 4 weeks. The approved units are unchanged from their current production and there has never been an issue with all the units in the field. It takes a long time to get these through the system, they were submitted at the beginning of the year.
The XPCR is a fairly old design compared to the CR230 but it was a good unit. I used to use plain couplers in small installations but have found that the repeaters just make everything work a whole lot better.
Bill
www.homeautomationnet.com