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CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

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  • 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
  • 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
  • A loud 85 decibel alarm sounds when CO levels reach dangerous , Battery Replaceable - Yes
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • 5-year limited warranty; Equipped with end of life signal chirp, so you know when its time to replace the unit for safety
  • 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)
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First Alert
What is carbon monoxide?

Common sources of Carbon Monoxide

Furniture

Dryer Vent

Chimney

What does the beep mean?

4 beeps and a pause

Emergency: Carbon monoxide has been detected. Move to fresh air and call 911.

1 beep every minute

Low battery: It's time to replace the batteries in your carbon monoxide alarm.

5 beeps every minute

End of life: It's time to replace your carbon monoxide alarm.

Recommended alarm placement
First Alert
What is carbon monoxide?
Common sources of Carbon Monoxide
Furniture
Dryer Vent
Chimney
What does the beep mean?
4 beeps and a pause

Emergency: Carbon monoxide has been detected. Move to fresh air and call 911.

1 beep every minute

Low battery: It's time to replace the batteries in your carbon monoxide alarm.

5 beeps every minute

End of life: It's time to replace your carbon monoxide alarm.

Recommended alarm placement
CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

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