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First Alert 10-Year Sealed Battery Photoelectric/Electrochemical Slim Round Carbon Monoxide and Smoke Alarm

First Alert

  • Photoelectric & electrochemical sensor
  • Slim design, half as thick as a standard alarm
  • Includes a built-in 10-year lithium-ion battery provides continuous power, with no need to ever worry about changing the battery during the lifetime of the alarm
  • 10-year limited warranty