As for the the first question, Customs doesn’t really care why, they just want to know what it is being imported. As for the second, this box is definitely intended for the Korean market but uses the same bandplan for OTA we North Americans have. The power supply supports 110 to 200 something, all I needed was a plug converterThe evaluation part may be why that is so. If it hadn't been classed that way, things may have been much different, no?
As a matter of perhaps peculiar interest, is this a Korean domestic market piece or did it come with a 110V power configuration (Korea uses 220VAC wall sockets)?