The Best Carbon Monoxide Alarms – Review & Buyers Guide

SaleBestseller No. 1
Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice...
  • Voice Alarm -Announces the hazard type detected thereby helping to speed up the correct reaction to...
  • Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were...
  • Audio alarm: 85 dB at 10 feet. Test/Reset Button and LEDs - Tests alarm circuitry and triggers the...
  • Battery - Provides protection even during power outages when many fire and carbon monoxide incidents...
  • Voice Announcements - Hush Feature temporarily silences nuisance alarms with "HUSH MODE ACTIVATED"...
Bestseller No. 2
Nest S3000BWES Nest Protect 2nd Gen Smoke + Carbon Monoxide Alarm, Battery (Battery)
  • Phone Alerts: Nest Protect sends you a message when there's a problem or the batteries run low.
  • Smoke and CO Locator: Nest Protect speaks up if there's smoke or CO and tells you where it is, so...
  • Detects CO: Carbon monoxide is an invisible, poisonous gas. Nest Protect tells you where it's...
  • A Light in the Dark: Usually Nest Protect has its light turned off, but when you walk underneath it,...
  • Fast Detection: Every second counts. The Split-Spectrum Sensor looks for both fast and slow burning...
Bestseller No. 3
First Alert Smoke Detector and Carbon Monoxide Detector Alarm | Battery Operated, SCO5CN
  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered...
  • Features an electrochemical Carbon Monoxide sensing technology as well as a photoelectric sensor...
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an...
  • Battery-operated unit installs quickly and easily without an electrician. Low battery signal mute,...
  • Simple to use, with a single test/silence button; EZ access battery drawer allows you to change...
SaleBestseller No. 4
Kidde Hardwire Combination Smoke/Carbon Monoxide Detector Alarm with Battery Backup and Voice...
  • Smart Interconnect-Interconnects up to 24 Kidde devices (of which 18 can be initiating), Battery...
  • Humidity range:10%-95% relative humidity, non-condensing.Battery Lockout System-The battery door...
  • Peak Level Memory-Announces "CARBON MONOXIDE PREVIOUSLY DETECTED" if alarm has detected a CO level...
  • Ionization Sensor Technology-Ideal for detecting fast flaming and other types of fires, est Button...
  • Green LED-Illuminates to indicate the unit is receiving AC power. Flashes once every 60 seconds to...
Bestseller No. 5
First Alert BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup
  • Keep your family safe with this hardwired smoke and carbon monoxide alarm; the battery backup means...
  • Features an electrochemical Carbon Monoxide sensing technology as well as an ionization sensor that...
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an...
  • Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when...
  • Simple to use, with a single test/silence button, and side-load battery compartment;...
SaleBestseller No. 6
Kidde Worry-Free 120V Hardwired Smoke & Carbon Monoxide Detector Alarm with Lithium Battery Backup |...
  • Provides Protection from Two Hazards - Fire and CO in one unit with 10-year sealed lithium battery...
  • Sealed-In Lithium Battery Backup - No battery replacement required over the 10 year life of the...
  • Voice Warning System - Verbally announces "FIRE!" or "WARNING! CARBON MONOXIDE" to help distinguish...
  • Ionization Sensing Technology - Ideal for detecting fast flaming and other types of fires....
  • Hush Feature - Temporarily silences nuisance alarms for approximately 9 minutes and will not allow...
SaleBestseller No. 7
Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-Copp-B-LPM
  • Digital Display - Displays the level of carbon monoxide the unit is sensing. Shows CO level in...
  • Battery Operated - Provides best protection during power outages. Battery Safeguard makes it...
  • Test/Reset Button - Tests unit's electronic circuitry & horn and resets the unit during alarm....
  • LED's - Green LED for normal operation, Red LED for alarm. Temperature range 40˚F (4.4˚C) to...
  • Provides peace of mind against the silent killer and a digital display
SaleBestseller No. 8
First Alert 2-in-1 Z-Wave Wireless Smoke Detector & Carbon Monoxide Alarm, Battery Operated
  • Help keep your family safe with this battery-operated smoke and carbon monoxide combination alarm....
  • Integrated wireless alarm system is Iris compatible to send you mobile alerts and emails, so you're...
  • Alarm features photoelectric smoke-sensing technology optimized to detect larger smoke particles...
  • Certified for use with Nexia Home Intelligence, Ring Home Security System, and other third party...
  • Includes test/silence button, side-access battery door, plus a tamper-resistant battery drawer and...
Bestseller No. 9
Nest S3000BWES Nest Protect 2nd Gen Smoke + Carbon Monoxide Alarm, Battery (Wired)
  • Phone Alerts: Nest Protect sends you a message when there's a problem or the batteries run low.
  • Smoke and CO Locator: Nest Protect speaks up if there's smoke or CO and tells you where it is, so...
  • Detects CO: Carbon monoxide is an invisible, poisonous gas. Nest Protect tells you where it's...
  • A Light in the Dark: Usually Nest Protect has its light turned off, but when you walk underneath it,...
  • Fast Detection: Every second counts. The Split-Spectrum Sensor looks for both fast and slow burning...
Bestseller No. 10
Kidde 9CO5-LP2 First Alert 21025778 Carbon Monoxide Alarm Battery, 1 Pack
  • Slide-out battery door that gives immediate access to the batteries and a safety feature that makes...
  • Inside cover of battery door features quick reference guide for what to do in case of an alarm.
  • Provides continuous monitoring of CO levels, even during power outages when AC- only units are not...
  • Low Battery Hush - Silences low battery chirp warning for up to 12 hours in order to maintain...
  • 10-year life and a 10-year limited warranty. 10-Year Life: "If your CO alarm was manufactured prior...

Buyers Looking for The Best Carbon Monoxide Alarms Have Asked These Common Questions

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These questions are extremely important to ask before you buy, so you make sure you’re getting the right product for your needs (and budget).

How We Compile Our List of The Best Carbon Monoxide Alarms?

In order to give you the most up to date and accurate list of high quality products, our software scans the internet for these items and automatically compiles them into a Top 10 list that is based on factors including price point, average review ratings, and several other data points, which ensures you’re seeing the most current, relevant, and popular products for your search.

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