I know it's not 400, don't remember the high end, and I looked at the website, didn't see a max temp.
I had one, but that was about 10 years ago, don't remember the max temp. It has two elements, gets hot, but not 400.
You'd need a charbroiler, Pellet grill or a FEC 100 to get those temps.
But like Max said, call CS and ask.