Best Carbon Monoxide Detectors in 2020

$30.44
$54.99
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$21.36
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1 used from $17.90
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$28.89
$71.50
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2 used from $36.11
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$27.17
$44.99
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1 used from $22.99
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$53.99
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1 new from $53.99
2 used from $50.05
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$119.00
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13 new from $115.00
2 used from $79.99
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$17.49
in stock
18 new from $17.49
7 used from $14.55
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$23.03
$34.99
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8 used from $15.77
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Last updated on July 20, 2021 9:38 am

First Alert Smoke Detector and Carbon Monoxide Detector Alarm | Battery Operated, SCO5CN

$54.99
$30.44  in stock
3 new from $29.99
5 used from $22.68
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Best Carbon Monoxide Detectors 1 Amazon.com
as of July 20, 2021 9:38 am

Features

  • Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
  • Battery operated unit installs quickly and easily without an electrician. Low battery signal mute, quiets low battery signal for up to 8 hours
  • Simple to use, with a single test/silence button; EZ access battery drawer allows you to change battery without removing alarm from ceiling

Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-Copp-B-LPM

$21.36  in stock
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as of July 20, 2021 9:38 am

Features

  • CO detector with alert modes & 2 LED lights that pulse for power & CO detection
  • Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm
  • Protects during a power failure - CO detector operates on 3-AA batteries
  • Easy to read digital display - allows for easy viewing of carbon monoxide levels
  • UL Certified, 10-year limited warranty

Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3

$71.50
$28.89  in stock
21 new from $26.98
2 used from $36.11
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as of July 20, 2021 9:38 am

Features

  • Protects during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure
  • Easy installation - plug can be installed in any outlet of your home; or use the attached extension cord to place on a table or shelf
  • Peace of mind - when CO detection is normal, a red dot appears in the lower right corner & blinks; includes a test button
  • Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage
  • UL Certified, 10-year limited warranty

Kidde Smoke and Carbon Monoxide Detector Alarm with Voice Warning | Hardwired w/Battery Backup | Interconnectable | Model # KN-COSM-IBA

$39.78  in stock
6 new from $39.78
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as of July 20, 2021 9:38 am

Features

  • Smart Interconnect-Interconnects up to 24 Kidde devices (of which 18 can be initiating), Battery Backup (2-AA batteries included)-Provides protection during power outages. Front Loading Battery Door-Replace the backup batteries without disconnecting from mounting bracket
  • Humidity range: 10%-95% relative humidity, non-condensing. Battery Lockout System-The battery door will not close unless the batteries are properly installed, Alarm Tamper Resist-Helps deter from tampering and theft, Adjustable Mounting Bracket-Makes installation fast and easy. Works with existing smoke and combination smoke and CO mounting brackets.
  • Peak Level Memory-Announces “CARBON MONOXIDE PREVIOUSLY DETECTED” if alarm has detected a CO level of 100ppm or higher since it was last reset, HushTM Feature-Silences nuisance alarms for approximately 9 minutes. (Smoke must be present before HushTM is activated)
  • Ionization Sensor Technology-Ideal for detecting fast flaming and other types of fires, est Button Functions: – Tests the unit for proper operation - Peak Level memory - Resets the Carbon Monoxide alarm
  • Green LED-Illuminates to indicate the unit is receiving AC power. Flashes once every 60 seconds to indicate battery only mode. Flashes once per second during alarm to indicate initiating alarm. Flashes once every 16 seconds to indicate smoke or CO previously detected. Flashes every 2 seconds while the alarm is in HUSHTM mode

First Alert BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup

$34.36  in stock
9 new from $27.75
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as of July 20, 2021 9:38 am

Features

  • Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure
  • Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection.
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
  • Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
  • Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy

Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

$44.99
$27.17  in stock
8 new from $20.50
1 used from $22.99
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Best Carbon Monoxide Detectors 1 Amazon.com
as of July 20, 2021 9:38 am

Features

  • Fire & CO detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire Fire", "Warning Carbon Monoxide", or "Low Battery"
  • Lonization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire at 10 feet
  • Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries
  • Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling
  • UL Certified, 10-year limited warranty

3 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home

$53.99  in stock
1 new from $53.99
2 used from $50.05
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Best Carbon Monoxide Detectors 1 Amazon.com
as of July 20, 2021 9:38 am

Features

  • Combo smoke detector/carbon monoxide alarm detects two threats
  • Electrochemical CO sensor alerts you to carbon monoxide danger
  • Photoelectric sensor detects smoke while minimizing false alarms
  • Battery-operated unit installs quickly and easily without an electrician,A single button tests the unit or silences the alarm. Low battery signal mute, quiets low battery signal for up to 8 hours
  • 5 YEARS WARRANTY

Google, S3000BWES, Nest Protect Smoke + Carbon Monoxide Alarm, 2nd Gen, Battery

$119.00  in stock
13 new from $115.00
2 used from $79.99
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as of July 20, 2021 9:38 am

Features

  • Smoke detector and carbon monoxide detector that speaks up in a friendly voice to give you an early warning when there’s smoke or CO in your home
  • Split Spectrum Sensor looks for both fast burning and smoldering fires and tells you where the danger is
  • Get phone alerts so you know something’s wrong even when you’re away from home[1]
  • CO detector looks out for carbon monoxide and tells you where it’s located
  • With App Silence, you can silence the smoke alarm with your phone in the Nest app when there’s only a little smoke

First Alert CO400 Carbon Monoxide Detector, White, Pack of 1

$17.49  in stock
18 new from $17.49
7 used from $14.55
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Best Carbon Monoxide Detectors 1 Amazon.com
as of July 20, 2021 9:38 am

Features

  • Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
  • Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.The alarm sequence should last 5-6 seconds. If it does not alarm, make sure fresh batteries are correctly installed, and test it again. If the unit still does not alarm, replace it immediately
  • A loud 85 decibel alarm sounds when CO levels reach dangerous levels
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • 5-year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety

First Alert Plug-In Carbon Monoxide Detector, CO600

$34.99
$23.03  in stock
11 new from $23.03
8 used from $15.77
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Best Carbon Monoxide Detectors 1 Amazon.com
as of July 20, 2021 9:38 am

Features

  • Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet
  • Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
  • A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels
  • To ensure complete protection make sure to place 1 on each level of your home and in each bedroom
  • 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety