Who bought this product in supermarkets, I under no circumstances gives the amazon service. My comment is to prevent consumers, let me explain: This programmer is certainly aesthetic (small, pretty, etc ...) and seems well made except that after one year of use on a 2200W heater that ignited 1 times a day, it did not work anymore (The programmer is supposed to work with devices up to 3680W). Looking more closely, and after opening the device, I noticed that the plastic part that makes contact galley to the connected device operation was blackened and melted. I think the internal product manufacturing is "light" and that it is not designed to last over time ... damage. Who to trust today? Legrand has yet good reputation. I turned toward the Otio brand to see in time ...