First Alert CO400 Battery Carbon Monoxide Alarm
No. 0800 home · Home Safety

First Alert CO400 Battery Carbon Monoxide Alarm

$21.99 4.6(22,038)

About this product

The First Alert CO400 is a battery-operated carbon monoxide alarm that continuously monitors CO levels with an electrochemical sensor, per the listing. It sounds an 85-decibel alarm, the battery is replaceable, it chirps when the unit reaches end of life, and it has a 5-year limited warranty. First Alert recommends one on each level of the home and in each bedroom.

Why We Like It

No wiring is needed, so it takes a minute to add one near the bedrooms.

Highlights

  • Battery powered
  • Electrochemical sensor
  • 85 dB alarm
  • End-of-life chirp
  • 5-year warranty
first alertcarbon monoxide alarmco detectorhome safetybattery poweredhousehold
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