First Alert SA511CN2-3ST Interconnected Wireless Smoke Alarm with Voice Location vs Roost Smart Battery

  • Great for a family of five
  • Easy to set up
  • Photoelectric sensor inside is quick to detect slow, smoldering fires
  • Single detector only - ionization type only
  • Comes with two alarms
  • Great for people who have smoke detectors
  • Battery lasts for a few months
  • App is not very confidence inspiring
  • Quality control is lacking
  • Died after two uses

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