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First Alert CO400 Carbon Monoxide Alarm, Battery Powered

4.3 out of 5 stars 1,117 customer reviews

Price: $19.88 Free Shipping for Prime Members
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1-Pack
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  • Service provided by a local pro
  • Estimate is for installation of 1 detector
  • Installing customer-supplied mounting plate
  • Running wiring to mounting location
  • Wiring alarm and attaching to mounting plate
  • Installing backup batteries as needed and testing device
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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Estimate: $109.99
88% positive ratings (77 reviews)
    This fits your .
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  • CO detector alerts you to carbon monoxide
  • Electrochemical CO sensor detects carbon monoxide
  • Battery-operated design works almost anywhere
  • Loud 85-decibel alarm sounds when CO levels are elevated
  • Single test/silence button for simple operation
  • Battery-operated carbon monoxide alarm
  • Uses electrochemical carbon monoxide sensor--the most accurate technology available
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Frequently bought together

  • First Alert CO400 Carbon Monoxide Alarm, Battery Powered
  • +
  • First Alert SA303CN3 Battery Powered Smoke Alarm with Silence Button
  • +
  • AmazonBasics 9 Volt Everyday Alkaline Batteries (8-Pack)
Total price: $37.56
Buy the selected items together


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

From the manufacturer


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This item First Alert CO400 Carbon Monoxide Alarm, Battery Powered
Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart
Customer Rating 4 out of 5 stars (1117) 4 out of 5 stars (589) 4 out of 5 stars (744) 4 out of 5 stars (398) 4 out of 5 stars (106) 4 out of 5 stars (2314)
Price $19.88 $25.01 $18.68 $18.49 $27.35 $26.71
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com
Color White White Black White Black Multi
Item Dimensions 1 x 5 x 3 in 7 x 8.5 x 3.25 in 6.75 x 8.5 x 2.8 in 7 x 3 x 11 in 7 x 2.25 x 8.5 in 1.5 x 4.5 x 2.75 in
Size 1-Pack 1 Pack 1 Pack 1 Pack One Size 1 Pack

Product description

Size:1-Pack

Product Description

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. The battery-powered design of this personal carbon monoxide detector means your space can be easily monitored for dangerous carbon monoxide gas. Simply insert the included 9-volt battery, and the carbon monoxide detector is ready to go. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it is time to replace the device.

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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on January 19, 2016
Size: 1-Pack|Verified Purchase
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on March 7, 2017
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on January 21, 2017
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on January 8, 2017
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on March 3, 2014
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on May 22, 2017
Size: 2 Pack|Verified Purchase
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on January 22, 2016
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on August 21, 2017
Size: 2 Pack|Verified Purchase
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