Heavens's Gifts has the RN4081 which is the atty. I don't think it's generic, but, hey, what do I know, it could be.
Just got an order in the other day and I tried one out and fired up. They are for the stash so all went in the drawer so here's hoping they all work.
Since I've heard nothing but good things about HG, I'm not that worried about it.