First Alert CO400 Battery-Powered Carbon Monoxide Detector

The noise is loud enough for everyone in the house to hear and receive sufficient time to get out of the house. The First Alert CO400 Battery-Powered Carbon Monoxide Detector also offers stability against changing temperatures and humidity to avoid false alarms or the failure of internal circuitry. This stability also helps them accurately respond to carbon monoxide and not other common household gases or chemicals such as ammonia.
First Alert CO400 Battery-Powered Carbon Monoxide Detector:
  • Carbon monoxide detector alarm uses electrochemical sensor for increased security
  • First Alert alarm mute feature silences detector when nuisance alarm sounds
  • Single button tests alarm functions
  • Easy front access to the battery
  • Meets UL standards
  • Battery operated, 2 AA batteries included
  • End-of-life timer, alarm chirps when it is time to replace it
  • Loud 85db alarm
  • First Alert carbon monoxide detector includes manufacturer's 5-year limited warranty
  • Additional Details
  • Brand: First Alert