The digital ones are the worst idea ever, they don't realize that maybe it will be a dark space behind the entertainment center that it is plugged in, and oh yea you have to crawl back there and hit 100 buttons to program it. And when the power flicks off, guess whos crawling back there again! Get the brinks mechanical "mini" timers. It's like $4 for the non grounded and $5 for the grounded and you get 15 min intervals. Found at a walmart.