The only relationship between the Pro-troll and the Scotty black box is that Dick Poole once work ed for Scotty in the U.S.A. They both parted ways and Dick knocked off the scotty blk box. The product was not up to snuff and from what I hear it has been recalled at least once for some sort of problems. The scotty blk box works and is the best product on the market, but in no way are they 2 products linked together.