I 2nd Sparkies comment. I was doing some 'special' lighting with some Leviton reps when they came out with this stuff. (Hey, I hate to crow but that job still graces their catalogs) and they asked me if I would like to try 'em. that was a long time ago, I'm thinking 15 years, but geezy dizeezy steps in. Only had one fail, and they work great.
I like the Leviton series too. They've come in real handy in situations like controlling outdoor lighting around a pool and other outside areas from inside the house 100+ feet away. Saved a lot of digging and what would've meant destroying some beautiful brickwork to get a direct line into the house. I have lost a few devices though presumably due to power surges/Lightning storms.
I learn something new everytime I log onto this site. Thanks for the link, Sparky. I'm finding out that I don't know much about residential applications. This X-10 "smart house" is an example. I've worked on some stupid houses before, but never a smart one. For that matter, I've worked on a lot of stupid jobs. I'm learning though....I'm learning... HMEL #688