Lorri,
The CS website lists the top temp of the SM025 at 300 degrees. This seems to hold true for all of their electric oven/smokers. If you want higher temps, I'm afraid you may have to start looking at a pellet-fueled unit.
But don't despair, I just upgraded from an Amerique to an FEC120 (gulp!), and I'm pleased far beyond my expectations with the improvement in my products' overall flavor and texture (and yes, it could be all in my head, but mass hysteria among family and friends?). It's as though I've gone from liquid smoke and a crockpot to genuine Q. I may get called out for saying it, but I think the difference between CS and FE is much greater than is typically acceptable to a state on this forum.
Please pardon my rant.
H