former apple executive who helped develop the ipod. it s easy to control and controls 50% of the home s energy use. advanced features like this help people save money. the leaf saves relative to what you, if you like 27 degrees at cooling season, it will show up 73 to nudge you slightly out of your comfort zone. reporter: he says even a degree or two of energy conservation can add up to a whole lot of savings at the end of the month. the price tag is about $250. first batch of therm statsd sold out in a matter of few weeks. a sign heather that the humble home thermostat is hot gadget and cool way to save some money. heather: and eventually it could read your mind. thank you very much, claudia. gregg: i got a couple digital