From How Stuff Works, an article on how a smoke detector works.

SOUND THE ALARM will feature a series of powerful advertisements.

Twice a year you should check your detectors or change batteries. So why not use the time change as a reminder? Susan Koeppen previews the latest in detector technology.

Officials state that working smoke detectors could have saved lives in a fire that killed five people.

According to the USFA, each year, thousands of children are injured or killed in home fires, and 40 percent of them are under age five.