Mine has a safety valve deal........it warns you if the pressure is too high. Although I've used the old ones (my mom's) and that one had to be watched.
I didn't even know they made electric ones. hmm But easy child and I love mine.
My mom used to make all sorts of things in hers.........pot roast, chicken and noodles (homemade noodles)......easy child and I can in ours. Neither of us has tried it for regular cooking yet.