Brand | FIRST ALERT |
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Style | Battery Powered |
Power Source | Battery Powered |
Color | White |
Product Dimensions | 1"D x 5"W x 3"H |
Item Weight | 0.45 Pounds |
Alarm | Audible |
Sensor Type | Electrochemical |
Material | Multi |
Manufacturer | First Alert |
Part Number | CO400 |
Item Weight | 7.2 ounces |
Country of Origin | Mexico |
Item model number | CO400 |
Batteries | 2 AA batteries required. (included) |
Is Discontinued By Manufacturer | No |
Size | Pack of 1 |
Pattern | Detector |
Voltage | 120 Volts |
Item Package Quantity | 1 |
Number Of Pieces | 1 |
Certification | UL2034 |
Included Components | Alarm; Mounting Bracket; User Manual; 9V Battery |
Batteries Included? | Yes |
Batteries Required? | Yes |
Battery Cell Type | Alkaline |
Description Pile | 9V battery |
Warranty Description | 5 Year Limited Warranty |
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To see product details, add this item to your cart.
FREE Returns
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns. How to return the item? - Go to your orders and start the return
- Select the return method
- Ship it!
Ships from: Amazon Sold by: Amazon Warehouse
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First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | FIRST ALERT |
Style | Battery Powered |
Power Source | Battery Powered |
Color | White |
Product Dimensions | 1"D x 5"W x 3"H |
Item Weight | 0.45 Pounds |
Alarm | Audible |
Sensor Type | Electrochemical |
Material | Multi |
About this item
- 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 it’s 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)
Customer ratings by feature
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Videos
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First Alert CO400 Carbon Monoxide (CO) Detector
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Must See Comparison First Alert CO Alarm #thisorthat
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Customer Review: Something is wrong with it
Timothy J Reeves
From the manufacturer
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Emergency: Carbon monoxide has been detected. Move to fresh air and call 911. |
Low battery: It's time to replace the batteries in your carbon monoxide alarm. |
End of life: It's time to replace your carbon monoxide alarm. |
Looking for specific info?
Product information
Technical Details
Additional Information
ASIN | B000N8OYXI |
---|---|
Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #190 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #2 in Carbon Monoxide Detectors |
Date First Available | June 27, 2007 |
Warranty & Support
Feedback
Product guides and documents
Product Description
Product Description
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 is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test/silence button silences the alarm and allows you to test its functionality. The unit monitors and re alarms if carbon monoxide level 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 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
Manufacturer Contact Information
1 (800) 323-9005.
WARNING:
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Price | -14% $14.99$14.99 Typical: $17.39 | $20.99$20.99 | $18.99$18.99 | -5% $26.99$26.99 List: $28.34 | $28.99$28.99 | $27.99$27.99 |
Delivery | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Easy to read | 4.5 | 4.7 | 4.7 | 4.6 | 4.6 | 4.7 |
Easy to install | 4.5 | 4.6 | 4.6 | 4.6 | 4.6 | 4.8 |
Accuracy | 4.4 | 4.2 | 4.2 | 4.6 | 4.4 | — |
Value for money | 4.3 | 4.2 | 4.2 | — | 4.3 | 5.0 |
Easy to use | 4.2 | — | — | 4.7 | — | 4.8 |
Sold By | Amazon.com | Ecoey-direct | Ecoey-direct | SITERWELL | X-Sense US | Siterlink |
power source | Battery Powered | Battery Powered | Battery Powered | Battery Powered | Battery Powered | Battery Powered |
sensor type | Electrochemical | Electrochemical | Electrochemical | Electrochemical | Electrochemical | Electrochemical |
style | Battery Powered | modern | Protection | Standard Model | Digital | — |
alarm | Audible | Audible | Audible | Audible | Audible | Audible |
Important information
120 volts
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of installation, performance, value, and weight of the gas smoke fire alarm. For example, they mention it's easy to mount, works great, and is good value for money. Some appreciate the compact size and weight. That said, opinions are mixed on quality and battery life.
AI-generated from the text of customer reviews
Customers like the performance of the gas smoke fire alarm. They say it works great, is easy to set up and install, and has a correct test function. Some mention that it's effective while being the simplest, and is a good brand.
"Greta carbon monoxide detector. Easy to set up and install. Test function works correctly. Definitely gives me peace of mind for the home." Read more
"Good brand and quality and price was good ! Good protection for the house." Read more
"I purchased two packs of the pack of 2. So far so good!? Tested fine. Hope it actually works, which is why I went with a name brand...." Read more
"They were easy to install and worked upon arrival; can't ask for much more than that. Please note these are battery operated, not plug-ins." Read more
Customers like the ease of installation of the gas smoke fire alarm. They say the instructions are clear and easy to follow. They also mention that the template for installation is included.
"Greta carbon monoxide detector. Easy to set up and install. Test function works correctly. Definitely gives me peace of mind for the home." Read more
"Easy to install" Read more
"This monitor is easy to use and accurate. The battery feature vs plug in makes it easier to place higher up which is better...." Read more
"They were easy to install and worked upon arrival; can't ask for much more than that. Please note these are battery operated, not plug-ins." Read more
Customers like the value of the gas smoke fire alarm. They mention it's a good buy and works great in their rentals.
"Good brand and quality and price was good ! Good protection for the house." Read more
"Trust the brand name and quality. The price was excellent" Read more
"I feel much safer in my home with these products. Worth the money." Read more
"Very well made, easy to install andat a reasonable price and delivered on time." Read more
Customers like the weight of the gas smoke fire alarm. For example, they mention it's compact, easy to mount, and a great space saver. Some say it'll fit over existing screws and is light weight. That said, some say it works well and is great for travel.
"...It is small and light weight enough that it should be the thing to pack (take out battery, store separately until in room)...." Read more
"...I chose because of the brand name & its UL listed too and its small enough & dont take up much space with our packing." Read more
"Lightweight and small. Bought to take with me while traveling as I don’t trust all hotels when it comes to carbon monoxide leaks." Read more
"Great space saver and your brush will dry faster" Read more
Customers are mixed about the quality of the gas smoke fire alarm. Some mention it's well made, and reassuring to have a reliable device that alerts them to potential carbon monoxide presence. However, others say that it started beeping and at first they thought it was the batteries.
"...Test function works correctly. Definitely gives me peace of mind for the home." Read more
"When I opened the package and tried to test my alarm, there was no light & no response...." Read more
"Good brand and quality and price was good ! Good protection for the house." Read more
"...the UL timelines, and even if there's an unsafe CO level, the device might not alarm if I turn my car off a half hour early...." Read more
Customers are mixed about the battery life of the gas smoke fire alarm. Some mention that it comes with batteries, while others say that the battery included died within 2 weeks of installation.
"...Turns out the battery it came with was dead." Read more
"...The C0400 carbon monoxide detector comes with a 9 volt battery...." Read more
"...there's no way for you to access that info, and the alarm is unreliable for intermittent leaks...." Read more
"...Please note these are battery operated, not plug-ins." Read more
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It tuns out that testing requires holding the Test button, not tapping it. The light flashes once a minute, so 99% of the time, the unit appears to be dead.
Once I knew to hold the button, I was able to confirm they appear to be operating properly after all. Better labelling would have saved me the cost of replacement batteries.
Reviewed in the United States on March 11, 2024
It tuns out that testing requires holding the Test button, not tapping it. The light flashes once a minute, so 99% of the time, the unit appears to be dead.
Once I knew to hold the button, I was able to confirm they appear to be operating properly after all. Better labelling would have saved me the cost of replacement batteries.
The C0400 carbon monoxide detector comes with a 9 volt battery. I knew I needed to replace my existing detector (they dont last forever, and need to be replaced ever so often) and I did not want the plug in style. I wanted battery operated so I could place it wherever I wanted and not be limited to available outlets. I also bought a second pack as a gift. I prefer giving practical, functional gifts, especially stuff that people tend to not want to buy, such as smoke alarms, fire extinguishers, carbon monoxide detectors.
If you travel, consider a battery operated detector such as this. Dont trust that a hotel room has you covered, or someone else's house. It is small and light weight enough that it should be the thing to pack (take out battery, store separately until in room).
I will likely buy an additional pack. Right now I have one on the first floor, and one outside my second floor bedroom door. I think having one in the basement and another in actual bedroom or elsewhere (spread out) would be better. Watch for sales, but if need be just buy them at any cost so you have them.
I am even thinking about adding one to my winter car kit. If ever stuck in a blizzard and had to stay in my car for any length of time, having a detector will help as CO2 levels can quickly rise if running car (or if a few people are simply breathing without the window open a crack) to keep warm. Tail pipes can easily clog especially if windy. So yeh, simple thing to stay safe and alive