The 120V model is available in other configuartions of length and controller but because we stock this one and order in bulk, these represent the best value by far. They hold a dozen programs of your choice with more steps in each program than you could ever use. This is the most powerful knife kiln controller we know of. Past issues with hinges and door latch have been resolved very nicely and these come with the door cutoff switch so you aren't playing with a foil envelope beside 120V live coils. We have heat treated blades on the kitchen counter with one of these - with the coffee pot plugged in to the same outlet. Not recommended. It's fine for the knives, but maybe not so good for your marriage.