"In fact, three out of five home fires come from homes without working ... with 10-year backup battery operation wins this ...

The Expert: Shawn Mahoney P.E. is an Engineer in the Technical Services Division at the National Fire Protection Association (NFPA). He is a registered professional engineer with a B.S. in ...

Even if your smoke alarm is attached to your electrical system, it should have a battery backup. When that battery is getting low, the alarm chirps to let you know. Do not call 911 because your ...