Just replace the batterieswhen needed ... 10-year backup battery operation wins this round. The post Hardwired vs Battery ...

Stay prepared with the most reliable smoke detectors for fire and carbon monoxide detection -- tested and recommended by our ...

Replace a smoke detector does involve working ... Consider dual sensor alarms for ultimate protection. Opt for hardwired detectors with battery backup since they're more reliable.

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 ...