We actually have a use for this as a temporary outlet multiplier, in the back of the house. Our 2-outlet plate is not sufficient whenever we organize a night pool party. We need the ability to plug in one or two coffee makers, a cheap boom box, a powered cooler. Under such circumstances we found this wall adapter as an acceptable solution. In the winter, it helps reduce some cable clutter in the front of the house for several strings of Christmas lights.It will fully cover a 2-outlet face, meaning that you gain 4 outlets.The major problem with this device is its lack of surge protection. It should be okay with appliances that are either resilient enough to be fully protected by the house's own circuit breakers, cheap enough not to be a major worry or don't include expensive electronics. Besides the uses that I mentioned I am thinking small kitchens, maybe basements.For anything else, I would invest a few extra dollars on a safer alternative.