Best 10 combination fire and carbon monoxide detector -Buying Guide

Best 10 combination fire and carbon monoxide detector -Buying Guide

Finding a combination fire and carbon monoxide detector that suits your need and does its job well can be challenging. Overall, our tester reviews these combination fire and carbon monoxide detector with giving ratings and marks for its durability, ease of setup and use. Also the combination fire and carbon monoxide detector price will be fairly matched the product’s performance, plus with the attractive and sturdy design etc that comes with the product. We conducted hands-on testing for combination fire and carbon monoxide detector and have the details guide and list provided below.

This is the ultimate buyers guide combination fire and carbon monoxide detector.

A Quick Comparison of Our Favorites

1
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 3-Pack
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 3-Pack
9.7
2
First Alert SMICO110, 10-Year Battery Combination Smoke & Carbon Monoxide Alarm, 1-Pack
First Alert SMICO110, 10-Year Battery Combination Smoke & Carbon Monoxide Alarm, 1-Pack
9.6
3
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack
9.6
4
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack
9.2
5
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
8.8
6
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 5-Pack
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 5-Pack
8.7
7
First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
8.7
8
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack
8.6
9
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector with Slim Profile Design, SMCO200, 1-Pack
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector with Slim Profile Design, SMCO200, 1-Pack
8.6
10
First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack
First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack
8.3

The Best combination fire and carbon monoxide detector

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 3-Pack

$117.95
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMICO100
Model SMICO100
Color White
Size 3-Pack
  • 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
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Battery-operated alarm allows for easy installation and maintenance
  • Test/silence button for efficient testing to ensure alarm is working properly

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack

$36.99
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMICO100
Model SMICO100
Color White
Size 1-Pack
  • 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
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Battery-operated alarm allows for easy installation and maintenance
  • Test/silence button for efficient testing to ensure alarm is working properly

First Alert SMICO110, 10-Year Battery Combination Smoke & Carbon Monoxide Alarm, 1-Pack

$42.99 $49.99
out of stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMICO110
Model SMICO110
Warranty 10 Years Limited
Color White
  • 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.
  • 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
  • Test/silence button for efficient testing to ensure alarm is working properly

X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack

$37.99 $42.99
PRIMEPRIME
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SC07
Model SC07
Warranty 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support
Color White
Is Adult Product
Size 1-Pack
  • Please Note: SC07 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC07-W
  • 2-in-1 Protection: The combination detector detects faster and more accurately using a photoelectric smoke sensor and an electrochemical CO sensor; tested and certified to meet UL 217 and UL 2034 safety standards
  • 10-Year Battery: The fire and CO alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage
  • Simple Installation: Requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs
  • Informative LCD: Displays real-time CO levels from 30–999 ppm (parts per million) taken from the surrounding air, as well as battery level and working status

First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack

$53.99 $64.99
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMICO100-AC
Model SMICO100-AC
Color White
Size 1-Pack
  • First Alerts 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
  • Through early warning interconnect, when one alarm sounds, all compatible
  • Quick Connect Plug allows for easy installation with no need to rewire
  • Battery backup provides continuous protection during power outages
  • Test/silence button for efficient testing to ensure alarm is working properly

First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack

$45.99 $59.99
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMCO210
Model SMCO210
Warranty Warranty
Color White
Size One
  • 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.
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
  • 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Slim profile design is half the depth of a standard alarm

X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 5-Pack

$169.99 $189.99
PRIMEPRIME
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Model SC07
Warranty 60-day money-back guarantee, 5-year quality warranty, and lifetime technical support
Color White
Size 5-Pack
  • 2-in-1 Protection: Combines smoke and carbon monoxide detection in one compact device for 24/7 home safety; tested and certified to meet UL 217 and UL 2034 safety standards
  • 10-Year Battery: The fire and CO alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage
  • Simple Installation & Operation: This battery-operated unit can be installed quickly and effortlessly without an electrician; one-button operation allows you to test and silence the alarm with ease
  • Informative LCD: Displays real-time CO levels from 30–999 ppm (parts per million) taken from the surrounding air, as well as battery level and working status
  • Large Mounting Bracket for a Clean Finish: Our extra-large 5.7-inch bracket covers more area than standard small ones, easily hiding old screw holes and ceiling stains from previous alarms; installation looks neat with no need for patching

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector with Slim Profile Design, SMCO200, 1-Pack

$38.99 $44.99
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMCO200
Model SMCO200
Color White
Size One
  • 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
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide
  • Slim profile design is half the depth of a standard alarm
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Battery-operated alarm is easy to install and maintain

First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack

$152.45
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMICO100-AC
Model SMICO100-AC
Color White
Size 3-Pack
  • 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
  • Through early warning interconnect, when one alarm sounds, all compatible alarms will sound
  • Quick Connect Plug allows for easy installation with no need to rewire
  • Battery backup provides continuous protection during power outages
  • Test/silence button for efficient testing to ensure alarm is working properly

First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack

$124.99
in stock
Amazon.com
Amazon price updated: September 16, 2026 9:25 pm

Features

Part Number SMCO100
Model SMCO100
Color White
Size 3-Pack
  • 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
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide
  • Battery-operated alarm allows for easy installation and maintenance
  • Test/silence button for efficient testing to ensure alarm is working properly
  • End-of-life warning lets you know when it’s time to replace the alarm

The Video Review of Best combination fire and carbon monoxide detector

The Verdict

Our best overall combination fire and carbon monoxide detector, the Perception and the reviews helps assist to choose you the product better. We hope our reviews buyer guide of these combination fire and carbon monoxide detector will help you pick the perfect combination fire and carbon monoxide detector for you and your buying decision making.

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