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First Alert CO400 Battery Powered Carbon Monoxide Alarm

4.3 out of 5 stars 864 customer reviews
| 59 answered questions

Available from these sellers.
1-Pack

Want this professionally installed?

What's included See more details
  • Have a handyman setup your product at a time that works for you
  • No hassles; No fumbling with parts, complex instructions, or tools
  • Your handyman will ensure that your product is carefully inspected for safety
  • Quality services by a handpicked local handyman; Backed by Amazon's Happiness Guarantee
How it works
  • Pro will contact you within 1 business day to schedule
  • Kick back and only pay when the job is done
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  • Book the service directly on Amazon
  • Receive confirmation within 1 business day
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Estimate: $92.59
86% positive ratings (44 reviews)
    This fits your .
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  • N/A
  • Imported
  • Battery-operated carbon monoxide alarm
  • Uses electrochemical carbon monoxide sensor--the most accurate technology available
  • Simple to use silence/test button, low battery warning, end-of-life timer
  • 1-9V Battery (included) power source. (NOTE: Product may come with 2 AA batteries. This is the same model.)
  • 5 year limited warranty
159 new from $16.99 1 used from $11.88

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WARNING:
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

From the manufacturer

Product description

Size:1-Pack

Product Description

The First Alert CO400 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The permanent sensor lasts up to five years. It is powered by on 9V replaceable battery giving you peace of mind even during power outages. The test/silence button both silences the alarm and allows you to test its functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual low battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 year limited warranty. UL listed.

Amazon.com

Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air. The First Alert CO400 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The permanent sensor lasts up to five years. It is powered by on 9V replaceable battery giving you peace of mind even during power outages. The test/silence button both silences the alarm and allows you to test its functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual low battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 year limited warranty. UL listed. --Bree Norlander


Product information

Size:1-Pack

Technical Details

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Customer Reviews

Top Customer Reviews

on January 19, 2016
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on December 1, 2016
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on February 26, 2009
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TOP 1000 REVIEWERon March 24, 2015
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on March 13, 2016
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on August 24, 2016
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