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Costco Smoke Detector Comparison - August 2025
| 1 Best Choice  9.7Exceptional | 2 Best Value  9.5Excellent | 3  9.2Excellent | 4  9.1Excellent | 5  9.0Excellent |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelKidde Smoke Detector, 10-Year Battery Powered, LED Warning Light Indicators, 20SD10, 2 Pack | Model Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack | Model First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack | Model X-Sense Smoke Alarm, 10-Year Battery Fire Alarm Smoke Detector with LED Indicator & Silence Button, SD2J0AX, 3-Pack | Model Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 2 Pack |
BrandKidde | Brand Kidde | Brand First Alert | Brand X-Sense | Brand Kidde |
Reviews | Reviews  | Reviews | Reviews | Reviews |
Tech Specs | ||||
batteries included Yes | batteries included Yes | batteries included Yes | batteries included Yes | batteries included Yes |
number of items 1 | number of items 1 | number of items 1 | number of items 3 | number of items 1 |
included components User Guide, Mounting Hardware, Two Alarm | included components User Guide, Four Alarms, Mounting Hardware | included components 9V Alkaline Battery | included components 6 Screws and Anchor Plugs, 1 User Manual, 3 Smoke Alarms SD2J0AX with Sealed 10-Year Lithium Battery | included components User Guide, Mounting Hardware, Two Alarm |
alarm Smoke Alarm | alarm Smoke and Carbon Monoxide Alarm | alarm Smoke Alarm | alarm Audible | alarm Smoke and Carbon Monoxide Alarm |
customer reviews4.6 4.6 out of 5 stars 10, 663 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 1, 977 ratings 4.5 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 24, 354 ratings 4.5 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 3, 598 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 297 ratings 4.5 out of 5 stars |
battery cell type Lithium Metal | battery cell type Lithium Metal | battery cell type Alkaline | battery cell type Lithium Metal | battery cell type Lithium Ion |
product dimensions 1.88D x 5W x 5H | product dimensions 1.88D x 5W x 5H | product dimensions 5.4D x 5.4W x 1.9H | product dimensions 4.8 x 4.8 x 1.8 inches | product dimensions 1.88D x 5W x 5H |
item weight 12.8 ounces | item weight 12.8 ounces | item weight 11.2 ounces | item weight 1.43 pounds | item weight 12.8 ounces |
item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 |
size 2 Pack | size 4 Pack | size 1-Pack | size 3-Pack | size 2 Pack |
power source Battery Powered | power source Battery Powered | power source Battery Powered | power source Battery Powered | power source Hardwired |
style 9th Edition | style 9th Edition | style Precision Detection | style Standalone Model | style Modern |
sensor type Photoelectric | sensor type Photoelectric, Electrochemical | sensor type Ionization | sensor type Photoelectric | sensor type Photoelectric, Electrochemical |
batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes |
color White | color White | color White | color - | color White |
shape Circular | shape Circular | shape - | shape Circular | shape Circular |
material Plastic | material Plastic | material - | material ABS Material | material Plastic |
operating humidity up to 95 relative humidity RH , non-condensing | operating humidity 10 to 95 relative humidity RH , non-condensing | operating humidity - | operating humidity - | operating humidity 10 to 95 relative humidity RH , non-condensing |
batteries 1 CR2 batteries required. included | batteries 1 CR2 batteries required. included | batteries - | batteries 3 Lithium Metal batteries required. included | batteries - |
upper temperature rating 100 Degrees Fahrenheit | upper temperature rating 100 Degrees Fahrenheit | upper temperature rating - | upper temperature rating - | upper temperature rating 100 Degrees Fahrenheit |
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
1KiddeKidde Smoke Detector, 10-Year Battery Powered, LED Warning Light Indicators, 20SD10, 2 Pack
Main highlights- SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
- NEVER-CHANGE 10-YEAR BATTERY: No low battery chirps or battery changes for 10 years and saves up to 40 Dollar over the life of the detector. (10-yr limited warranty on alarm, not a battery performance claim.)
- ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition and FCC standards.
- DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
- 3 LED NOTIFICATIONS: LED lights indicate alarm status, green - normal operation, amber - operating error, red - smoke detected.
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9.5
2Kidde40% Off
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
Main highlights- TEST & HUSH BUTTON: Makes it easy to test the 5-inch combination detector and silence false alarms, should they occur.
- SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
- NEVER-CHANGE 10-YEAR BATTERY: No low battery chirps or battery changes for 10 years & saves up to $40 over the life of the detector. (10-yr limited warranty on alarm, not a battery performance claim.)
- ENHANCED SENSING TECHNOLOGY: Reduces false smoke alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition, UL 2034 4th Edition, & FCC standards.
- EASY INSTALLATION: No wiring needed, simply mount the bracket onto the ceiling and twist & click the 5-inch smoke & CO alarm into the bracket.
- 3 LED NOTIFICATIONS: LED lights indicate alarm status, green = normal operation, amber = operating error, red = smoke or carbon monoxide detected & a loud 85-decibel alarm will sound.
- 2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective device.
- 10-YEAR LIMITED WARRANTY: Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced.
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9.2
3First Alert15% Off
First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack
Main highlights- Test/silence button for efficient testing to ensure alarm is working properly
- Front access battery compartment makes for easy battery replacements
- First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
- End-of-life warning lets you know when it’s time to replace the alarm
- Battery-operated alarm allows for easy installation and maintenance
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.
