Like the title reads, this works great for a top load freezer. When the fuse tripped in our basement we lost a lot of food when we discovered the mess five days later. I bought this and the next time the fuse tripped, it was only a matter of hours, not days. Sounds like a cheap bedside LED alarm clock beeping, irritating and loud enough to make you wonder what's going on. So I bought one for the garage fridge/freezer combo which we use in the summer. This did not work out as well, since it's gone off a few times when the power was fine to the garage unit. SO I would only recommend this for a top loader freezer that doesn't cycle as much as a smaller kitchen model. It has a set cold limit and it not programmable. But it's cheap and effective in most cases. If you're a hunter and store lots of meat in your freezer, this is a worthwhile investment.