I really like this item. Don't know what I'd do without them, now but I have them. I am 87 years old and handicapped. These make my home very safe and convenient for me to turn off appliances I am not using. I especially like them for my heating pads. When plugged in the control can get very warm, even after it has timed out, at two hours. They work through the walls of my mobile home and even to an outside outlet. I have four sets of them. I will use a set for my Christmas decorations. These are even better than a timer because I can turn them on and off whenever I want to with just a push of the button. My family is impressed with how convenient and safe things are in my home.