BITS Smart Strip Power Strip - 10 Outlets

Hi, I was just curious, doesn't the control outlet supply power to the device plugged in just like it were plugged into one of the constant hot outlets?
If yes, can I assume that when "off" power is still drawn and it is not really zero power but the power of the control device in standby plus the power to keep devices plugged into the auto sockets off as there must be some device to switch-on/cut the power?

A while back, I ordered a SmartStrip and installed it for my computer. After a couple of months, I noticed that my electricity bill was a tad lower. So I went around the house "feeling" for the transformers ("bricks") that most electronics use -- and most of which gobble electricity. After this, I used a Kill-a-Watt to actually measure, and was amazed.

My computer speakers were remarkably piggy -- 12 Watts each for three sets, and who remembers to turn them off? A couple cell chargers, and then the sound system on the TV. It all added up to almost 200W. When I did the math, it turns out that 100W that's on all the time costs me about $100 a year, actually a little more. So the $120 I spent on the SmartStrips will pay off in less than a year.

And they are nice in other ways, too -- one button turns off a whole bunch of stuff at once. No more quiet hums, little red lights, not to mention completely and utterly wasted electricity.

One trick: laptop computers don't have a significant voltage change when you turn them off -- so use the monitor as the "control" device. Mine goes into standby on its own after about 10 minutes, so everything else that I also don't need turns off then, too.

Another trick -- use an extension cord if you need more switched outlets, or at a different location. I have several battery and cell chargers and a single charging station that really only needs to be on for about an hour a day to top everything off. That's 23 hours a day that 3w or 6w or more is not just being used for nothing. Incredible!