Thanks for cluing us in on the source, Timttmy.

Jon, these things are a trick. I really think some manufacturer orders 10,000+ of these from China, assembled,  then brands them all for resale. 

The factory making them might as well sell a kit with all the parts and make some money on the side.  :P

However, you're left on your own to figure the thing out. 

Then again I do like a challenge. It was a fun project.