Hi,
The only manual I've got is this http://www.bizoner.com/download/USB-SSC32_Command_Formatting.pdf. But I don't think it says anything about bluetooth.
I don't know why they use the word Arduino either, as you said there is nothing to do with Arduino (you can use it with Arduino, though and it works very well).
Thanks for the comment on 3,3V. Do you think I should connect it to the 3,3V pin on my Mega instead of the 5V?
Thanks also for the links. I will read them more in depth. Although it seems they talk abot PC talking to Arduino (and some people talks about instaling software or drivers for this to happen) but my question is more how an Arduino can give commands to a SSC32 controller (PC and Arduino will talk by serial cable). If the computer needs drivers for a bluetooth, how you "install"a similar thing to Arduino? Sorry if I'm saying silly things. I will read and learn more when I have a bit of time.