Everyone knows what a smoke alarm looks like; the design has barely changed since it was first introduced in 1967. But now Kidde is looking to change all that with the introduction of their new Silhouette Smoke Alarm. It's much slimmer than conventional smoke alarms, extending only 1/2 inch from the ceiling, making it much more concealable and less of an eyesore. Best of all, there is no need to change the battery. The Silhouette draws its power from the home's electrical power system and uses a rechargeable battery during power outages. The battery is recharged when the home's electrical supply is re-activated. There's even a one-touch button to silence nuisance alarms.