First Alert CO400 Carbon Monoxide Detector, Battery Operated

The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It … This handy 6-pack of First Alert CO400 Carbon Monoxide Alarms utilizes electrochemical carbon monoxide sensors to monitor your space for carbon monoxide threats …

First Alert CO400 Carbon Monoxide Detector, Battery Operated
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First Alert CO400 Carbon Monoxide Detector, Battery Operated

Features

  • All first alert CO alarms are rigorously tested to meet UL standards
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
  • Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there’s a power failure
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • A loud 85 decibel alarm sounds when CO levels reach dangerous levels
  • 5-year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety
  • Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.The alarm sequence should last 5-6 seconds. If it does not alarm, make sure fresh batteries are correctly installed, and test it again. If the unit still does not alarm, replace it immediately
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