You put the product in one chute and hit the start button and the basket lowers into the oil and lifts it out at the right time. The basket is then dumped out another chute. They are solidly built and come in larger sizes. The one I had was limited in capacity.
I've not seen any others around here and I sold mine but it's a good option to consider.
As one who has owned and used one, I'd be glad to offer my observations. There's lots of gadgets for commercial kitchens these days.