Err. Sorry about that again. I am bored. But anywho, that is a pretty accurate description of what these do (and sound like). You feed it a high digital signal, it feeds you pure auditory bliss. Well I guess that's debatable. It's kind of an annoying buzzing sound, but it's sure to garner some attention. This thingy uses a standard 3-pin Signal/V+/GND interface, so plugging it into things like the Electronic Brick, Grove, or Phidgets system is a breeze.
Please do something dangerous with it. Seriously.