The DSV monitors temperature using a built-in probe and switches a power outlet on & off to maintain the target temperature set by the user.  Common household appliances can be transformed into sous-vide water baths simply by plugging them into the DSV.

Here’s what you’ll need to start cooking sous-vide:

1. DSV Temperature Controller
2. Water-bath (view guidelines)
3. Vacuum sealer (optional, see why)