Oh this is too priceless.
The same sticker in the US Wiimote seems to be located inside the battery compartment. I just checked and, indeed, the Wii uses a remote with an FCC designation of POO-WC45.
im lovin it
*edit* Also, apparently "WC" can be considered an abbreviation for "Water Closet" which is moon-language for "bathroom".
This is humor at its finest folks!