Just love these. I wanted to augment the daylight for my house plants (and me) during the dreary Portland winter, but I want my house to look nice and didn't like the ridiculous timer contraptions with white boxes and large, clunky green dials. These are almost invisible plugged into an outlet in my house's naturla-wood baseboard. Their design is very user friendly--I didn't even have to use the booklet to figure it out, but the booklet explained things well if someone needed it. There are three optional cycles you could use per day, but I only needed one--just setting some up-lights on an armoire to come on at sunrise and go off at sunset. It was also very nice that their backup battery was already charged when they arrived, so I was able to set them before plugging them in and didn't have to leave them in an outlet overnight first. Not that that would have been a big deal. The only thing to note about these is that they're horizontally broad, and your light or appliance has to plug in at one end. So if your outlet is directly against a cabinet or other obstruction, you'll need a little hardware store adapter to plug this in at a favorable angle. I have three of these, helping to augment the sunlight in three different rooms. They work like a charm. Very glad I found them.