Product review (5 stars): Darn good unit. Zero problems ...unlike my newer immersion circulator.
Simple, easy to use, reliable. I've had one for about 4 years and it has worked great. Controls are easy to use and obvious unlike some of the newer immersion circulators (eg Anova which I also have and use far less than this unit)

The single flaw is that this is a big box of water  that doesn't store in a drawer when not in use. I keep mine in the basement where it waits quietly until I need it.

More expensive than the newer cheaper circulators but it never fails.

If I were the manufacturer I'd drop the price and sell it on reliability.