voltage is not an issue as such but more the Hz as the board sniffs this and will not work so either:
a) get Stern to reprogram the board
b) use a "hack board" that fools the hz (if you can find one)
c) use a transformer but it will need to also set the Hz. I dont know anyone doing this.
my Tron LE has the hack board. No, I don't know where to get them from.