With most modern TVs consuming well below 1 Watt of power in stand-by, and some even as little as 0.15 Watt (http://ces.cnet.com/8301-13855_1-9843645-67.html), this product is yet another clear example of a solution without a problem.
Unfortunately non of the claims on saving energy are backed up by cold hard facts. Figures on how much the modules consume are simply missing.
This product may still be a very good X10 product, like many others. And there's nothing wrong with that, but please don't sell it as something it is not to people who would like to do something for the environment.
I know for a fact that Philips goes through very much effort to get their TV sets to consume as little as possible: Men years of effort are invested to develop very complex power supplies that yield a high efficiency in both low as high load. And a stand-by consumption of 1 Watt has been the standard for the past 10 years and it is still hard to beat, let alone 0.15 Watt...
To illustrate my point:
A Xanura DAX2 consumes about 4.9 Watts* and a Xanura SAX15 about 5.3 Watts*. I seriously doubt if these devices do any better.
In other words; If you're using a DAX2 to kill the power on your 10 years old Philips TV, you will have an increase of stand-by power consumption of almost 400% instead of saving power. There may still be a lot of other valid reasons to do this, like fire hazards etc, but saving energy and hence the environment isn't one of them....
*) Yes, I've got to admit: I actually measured VAs instead of Watts because I don't have a cos-phi meter and I didn't want connect my oscilloscope directly to the mains. And yes, these devices probably use an inductive power supply, so it may still make a difference, but I did use a calibrated Fluke 45 True RMS desk meter so it's still a pretty good indication.