Thanks for all the responses. This has been a very good learn. I am going to fumble my way through my home and then my apprentices home. I am sure I will be back for more. A quick question on the elk ez product and the caddx board. Is there a way to use a simple caddx board and turn lights on if there is a smoke or general alarm, ie is there any way to send x10 or upb signals with a generic security board or do you have to go to a Elk ez8 board?
I "think" that Caddx makes a relay output board that will work with their NX8 series and that has an X-10 output (using a powerline interface such as a TW523 or PSC05.
But given the choice between the two, I would go with the Elk if nothing more than the ease of programming it (compared to the Caddx). (FYI, I've programmed a Caddx NX8e and an Elk M1-Gold)