Rene Campos wrote a review of the Enerwave dual switch. It probably applies to the Vision.
"Adding this device to a SmartThings controller was not simple. Following the instructions supplied by Enerwave will only get you one switch working. After a couple of hours searching on the internet I found a thread about this module and the SmartThings controller. Followed the directions on the thread and got my 2 switches working fine. Just that the 2nd relay status takes up to 2 or 3 minutes to update the status, not a big deal.
The thread with the instructions is in the following site: