I’ve done some Work on trying to figure out how to solve the DC40 Issues. Looks like I’m making good progress.
We took an Old Non Updated DC40 collar and Made it work as good as or better than a DC30 collar.
For more information and More Details Please Visit DuSupply.com
Modified DC40 collars will only be available at DuSupply.com, We take Stock Garmin DC40 collars and fix them up so you get better performance from them.