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Smart Smoke And Carbon Monoxide Detector Comparison - September 2025
| 1 Best Choice  9.9Exceptional | 2  9.6Exceptional | 3  9.5Excellent | 4  9.4Excellent | 5  9.1Excellent |
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ModelX-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51 | Model X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 3-Pack | Model X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Included), Model XP0A-MR31 | Model X-Sense Smart Smoke Detector and Carbon Monoxide Detector with Voice Location, Wi-Fi Smoke Detector Carbon Monoxide Detector Combo with Real-Time App Notifications, XP0A-iR, 1-Pack | Model X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with No Fee App Notification, Replaceable Battery Powered Smoke Detector and Carbon Monoxide Detector, SC06-WX, 1-Pack |
BrandX-Sense | Brand X-Sense | Brand X-Sense | Brand X-Sense | Brand X-Sense |
Reviews | Reviews | Reviews  | Reviews | Reviews |
Tech Specs | ||||
power sourceBattery Powered | power source Battery Powered | power source Battery Powered | power source - | power source Battery Powered |
customer reviews4.7 4.7 out of 5 stars 14 ratings 4.7 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 500 ratings 4.5 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 236 ratings 4.5 out of 5 stars | customer reviews - | customer reviews 4.5 4.5 out of 5 stars 6 ratings 4.5 out of 5 stars |
product dimensions- | product dimensions 5.7 x 5.7 x 2 inches | product dimensions 1.2D x 5.2W x 5.2H | product dimensions 1.2 x 5.2 x 5.2 inches 11.36 ounces | product dimensions 5.7D x 5.7W x 2H |
batteries- | batteries 3 CR123A batteries required. included | batteries 1 CR123A batteries required. included | batteries 1 CR123A batteries required. included | batteries 1 CR123A batteries required. included |
alarmAlarm | alarm - | alarm Combination Smoke and Carbon Monoxide Detector and Base Station | alarm - | alarm Alarm |
sensor typePhotoelectric | sensor type - | sensor type Electrochemical, Photoelectric | sensor type - | sensor type Photoelectric, Electrochemical |
item weight- | item weight 2.64 pounds | item weight 2.51 pounds | item weight - | item weight 13.4 ounces |
batteries included- | batteries included Yes | batteries included Yes | batteries included - | batteries included Yes |
size- | size 3-Pack | size 3 Combination Detectors | size - | size 1-Pack |
material- | material Heat-Resistant PC Plastic Material | material Heat-Resistant PC Plastic Material | material - | material Heat-Resistant PC Plastic Material |
style- | style Wi-Fi Connected Model | style With Base Station | style - | style Wi-Fi Connected Model |
battery cell type- | battery cell type Lithium Metal | battery cell type Lithium Metal | battery cell type - | battery cell type Lithium Metal |
batteries required- | batteries required Yes | batteries required Yes | batteries required - | batteries required Yes |
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
9.9
1X-SenseX-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51
Why we love it
Easy app-based control and notifications.
Long-lasting 10-year battery life.
Quick installation and setup process.
Main highlights- Share the Convenience: Let up to 12 people control the device via the X-Sense app, making it easy for everyone to receive notifications, test and silence devices, check the alarm’s status, and more
- Note: Compatible only with 2.4 GHz Wi-Fi (incompatible with 5.0 GHz); connects to the X-Sense Home Security App via the included base station
- Fast Fire Dispatch Within Just 3 Seconds: By subscribing to the (optional) Protect+ Premium subscription plan which provides 24/7 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately
- Easily Locate the Source Alarm: Name the alarm based where it’s located; when the alarms sound, tap the Locate button to silence the base station and other alarms, leaving only the triggered alarm active and displayed with room name
- App Test/Silence: Test or silence your alarms with just a tap in the app; no need to fetch a ladder to reach the test/silence button
- App Alerts: With the alarm setup in the app, you’ll get an instant alert when it is triggered, and the alarm and base station will both sound; you’ll also get handy alerts for low battery, faults, test results, and more
- All Alarms Sound As One: All Link+ Pro alarms connected to the base station will sound together if any one of them is triggered, ensuring everyone hears the alarm and can react quickly; the Link+ Pro series includes SC07-MR/XP0A-MR combination alarm, XS01-M/XS0B-MR smoke alarm, XC01-M carbon monoxide alarm, and XH02-M heat alarm
- 10-Year Combination Alarm: Benefit from this smoke and carbon monoxide alarm for an entire decade; replace the battery just once thanks to the 5-year CR123A battery
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9.6
2X-Sense
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 3-Pack
Main highlights- Real-Time Notifications: Keep an eye on your home from anywhere and get immediate push notifications through the X-Sense Home Security app for alarms, low battery, faults, and more
- Note: Compatible only with 2.4 GHz Wi-Fi (incompatible with 5.0 GHz); does not work with or connect to the base station; multiple devices connect to the X-Sense Home Security App individually and do not communicate with each other
- Fast Fire Dispatch Within Just 3 Seconds: By subscribing to the (optional) Protect+ Premium subscription plan which provides 24/7 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately
- Device Sharing: With the X-Sense Home Security app, you can effortlessly share your devices with 12 family and friends, enabling them to monitor your home safety and receive crucial alerts
- Decade-Long Safety with Precision Detection: This 2-in-1 alarm combines photoelectric smoke and Figaro electrochemical CO sensors, giving you the utmost safety and peace of mind; powered by replaceable battery, not AC hardwired
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9.5
3X-Sense
X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Included), Model XP0A-MR31
Why we love it
Voice alerts specify danger location.
Integrated smoke and CO detection.
Easy smartphone connectivity.
Main highlights- Ultra-Slim, Sleek Design: Only 1.2 in (30 mm) thick, this unobtrusive alarm easily blends with your home décor; the mounting bracket is 5.3 in (135 mm) wide, covering the hole from your old alarm perfectly
- Talking Alarm Says the Location: Quickly identify any danger thanks to this talking alarm that tells you what's going on where: when smoke or CO is detected, you’ll hear a voice saying "Warning! Smoke detected in Living Room. Evacuate." or "Warning! Carbon monoxide detected in Living Room. Move to fresh air."
- Super User-Friendly: Easily install and maintain your alarm thanks to clear spoken instructions helping you to silence alarms, pair over Wi-Fi, identify alarm locations, run tests, detect faults and know when it’s time to change the battery; the easier to maintain, the safer you are
- Note: Compatible only with 2.4 GHz Wi-Fi (incompatible with 5.0 GHz); connects to the X-Sense Home Security App via the included base station
- Fast Fire Dispatch Within Just 3 Seconds: By subscribing to the (optional) Protect+ Premium subscription plan which provides 24/7 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately
- App Alerts: Get instant alerts on your phone whenever the device detects danger or its status changes; all devices still keep interconnected when added to app, so when one alarms, all will go off; share the alarm with up to 12 family members to keep them in the loop
- 2-in-1 Protection: Enjoy total peace of mind with this dual-purpose alarm fitted with both smoke and carbon monoxide sensors; plus save time and space by only fitting a single unit
- 10-Year Lifespan: The heat-resistant PC body and 10-year sensor life offer performance you can trust for up to 10 years; the replaceable CR123A battery lasts up to 5 years
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.
