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Carbon Monoxide Detectors Comparison - July 2025
| 1 Best Choice  9.7Exceptional | 2  9.5Excellent | 3  9.3Excellent | 4 Best Value  9.1Excellent | 5  9.0Excellent | 6 8.9Very Good | 7  8.6Very Good |
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ModelKidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display | Model Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable | Model Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button | Model First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO605, White, 1-Pack | Model Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable | Model First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack | Model Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen |
BrandKidde | Brand Kidde | Brand Kidde | Brand First Alert | Brand Kidde | Brand First Alert | Brand SHYEEH |
Reviews | Reviews  | Reviews | Reviews | Reviews | Reviews  | Reviews |
Features | ||||||
Easy installation 9.9 | Easy installation 9.9 | Easy installation 9.8 | Easy installation 9.8 | Easy installation 9.8 | Easy installation 9.4 | Easy installation 8.6 |
Simple to use 9.6 | Simple to use 9.8 | Simple to use 9.6 | Simple to use 9.6 | Simple to use 9.9 | Simple to use 9.1 | Simple to use 8.1 |
Precision 9.6 | Precision 9.6 | Precision 9.6 | Precision 9.3 | Precision 9.4 | Precision 9.3 | Precision 8.6 |
Battery duration 9.6 | Battery duration 9.4 | Battery duration 9.4 | Battery duration 9.3 | Battery duration 9.1 | Battery duration 9.1 | Battery duration 8.1 |
Worth the money 9.6 | Worth the money 9.8 | Worth the money 9.6 | Worth the money 9.4 | Worth the money 9.4 | Worth the money 9.1 | Worth the money 8.4 |
Clearly written 9.6 | Clearly written 9.6 | Clearly written 9.6 | Clearly written 9.6 | Clearly written 9.8 | Clearly written 9.4 | Clearly written 8.6 |
Lasts a long time 9.8 | Lasts a long time 9.6 | Lasts a long time 9.6 | Lasts a long time 9.3 | Lasts a long time 9.4 | Lasts a long time 8.6 | Lasts a long time 7.7 |
Tech Specs | ||||||
batteries included Yes | batteries included Yes | batteries included Yes | batteries included Yes | batteries included Yes | batteries included Yes | batteries included No |
customer reviews4.7 4.7 out of 5 stars 26, 314 ratings 4.7 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 30, 639 ratings 4.7 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 32, 430 ratings 4.7 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 18, 035 ratings 4.7 out of 5 stars | customer reviews 4.7 out of 5 stars 17, 845 4.7 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 19, 319 ratings 4.7 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 48 ratings 4.5 out of 5 stars |
item weight 1.05 pounds | item weight 8 ounces | item weight 0.635 ounces | item weight 4.2 ounces | item weight 0.16 ounces | item weight 7.2 ounces | item weight 3.84 ounces |
power source Plug In | power source Battery Powered | power source Plug In | power source Corded Electric | power source Battery Powered | power source Battery Powered | power source Battery Powered |
batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes |
color White | color White | color White | color White | color Detector | color White | color - |
pattern Detector | pattern Detector | pattern Detector | pattern Alarm | pattern Detector | pattern Detector | pattern - |
included components one user manual, one 9V battery, one CO alarm, model KN-COPP-3, one mounting hardware packet for wall-mount option | included components 21025778 Carbon Monoxide Alarm Battery | included components two AA batteries, User manual | included components Alarm, Battery | included components Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-Copp-B-LPM | included components Alarm Mounting Bracket User Manual 9V Battery | included components - |
battery cell type Alkaline | battery cell type Alkaline | battery cell type Alkaline | battery cell type Alkaline | battery cell type Alkaline | battery cell type Alkaline | battery cell type - |
product dimensions 1.75D x 3.75W x 6.06H | product dimensions 1.5D x 4.5W x 2.75H | product dimensions 2.75 x 1.5 x 4.5 inches | product dimensions 1.38D x 5W x 3.4H | product dimensions 1.5D x 4.5W x 2.75H | product dimensions 1D x 5W x 3H | product dimensions - |
batteries 2 AAA batteries required. included | batteries 2 AAA batteries required. included | batteries 2 AA batteries required. included | batteries 1 9V batteries required. included | batteries 3 AA batteries required. included | batteries 2 AA batteries required. included | batteries - |
voltage 120 Volts | voltage 3 Volts | voltage 120 Volts | voltage 120 Volts | voltage 3 Volts | voltage 120 Volts | voltage - |
style Detector | style Detector Alarm | style 1 Pack | style Plug in Alarm with Battery Backup | style - | style Battery Powered | style 1 Pack |
warranty description 10 Year Limited | warranty description 10-Year warranty: Consult User Guide for more information. | warranty description - | warranty description 7 Years Limited | warranty description 10 Year Limited | warranty description 5 Year Limited Warranty | warranty description - |
alarm Audible | alarm fire safety, battery powered, tamper-resistant | alarm - | alarm Carbon Monoxide | alarm Audible | alarm Audible | alarm - |
size 1 Pack | size 1 Pack | size - | size 1-Pack | size KN-COPP-B-LPM | size Pack of 1 | size - |
sensor type Ionization | sensor type Electrochemical | sensor type - | sensor type Electrochemical | sensor type Electrochemical | sensor type Electrochemical | sensor type - |
item package quantity- | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity - |
upper temperature rating 37.8 Degrees Celsius | upper temperature rating 100 Degrees Fahrenheit | upper temperature rating - | upper temperature rating 105 Degrees Fahrenheit | upper temperature rating 37.8 Degrees Celsius | upper temperature rating - | upper temperature rating - |
material ABS | material Carbon | material - | material Plastic | material - | material Multi | material - |
operating humidity 5 to 95 relative humidity, non-condensing | operating humidity 5 to 95 relative humidity, non-condensing | operating humidity - | operating humidity - | operating humidity 5 to 95 relative humidity, non-condensing | operating humidity - | operating humidity - |
certification Yes | certification not applicable | certification - | certification - | certification - | certification UL2034 | certification - |
Review | Review - | Review - | Review | Review | Review | Review - |
Available On   | Available On | Available On  | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.7
1Kidde39% OffKidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
9.9 Easy installation9.8 lasts a long time9.6 Simple to useWhy we love it
Easy to install and use.
Digital display provides clear CO levels.
Battery backup ensures continuous protection.
-
9.5
2Kidde21% Off
Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
9.9 Easy installation9.8 Simple to use9.8 worth the moneyWhy we love it
Easy installation, no wiring needed.
Portable and versatile placement options.
Loud alarm ensures effective alerting.
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
