Top 15 Best Carbon Monoxide Detectors (Reviews & Buyers’ Guide 2022)

CO detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home

Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire

Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage

Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases

UL Certified, 10-year limited warranty

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

Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide 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

Simple to use, with a single test/silence button; A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels. Low battery signal mute, quiets low battery signal for up to 8 hours

To ensure complete protection make sure to place one 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

All first alert CO alarms are rigorously tested to meet UL standards. Item length is 3.4 inches, item width is 1.38 inches and item height is 5 inches

First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

Keep your family safe with this 2-pack of easy to use, battery operated carbon monoxide alarms; 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

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

All first alert CO alarms are rigorously tested to meet UL standards

Keep your family safe from carbon monoxide in multiple rooms with this convenient plug-in carbon monoxide alarm 3-pack; the alarms work 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.Never use water, cleaners, or solvents, sincethey may damage the unit

To ensure complete protection make sure to place one on each level of your home and in each bedroom

All First Alert CO alarms are rigorously tested to meet UL standards

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

ACCURATE, RELIABLE & HIGHLY SENSITIVE TO CARBON MONOXIDE: Built with an advanced electrochemical sensor and intelligent chipset, the X-Sense carbon monoxide alarm quickly and accurately detects dangerous carbon monoxide (CO) leaks in the surrounding air; designed to give you the earliest possible warning of CO threat with a loud 85 dB alarm and a rapid flashing LED indicator (the LED indicator won’t disturb your sleep while the alarm is in normal working status)

LARGE LCD DISPLAY: Clearly displays the real-time CO levels in PPM (parts per million) taken from the surrounding air, with an updated measurement taken every 10 seconds; comes equipped with a peak level memory, showing you the highest CO concentration measured since the last reset

LED INDICATOR: Clearly informs you of the working status of the alarm with its 3-color flashing LED indicator (green LED indicates normal operation, red LED indicates the alarm status, and yellow LED indicates a fault), ensuring the safety and security of your home 24/7

10-YEAR BATTERY & PREMIUM MATERIAL: Comes with a 10-year sealed lithium battery for uninterrupted operation; housed in a frame made from premium PC plastic material that is both fire-retardant and highly durable; provides the ultimate protection for you and your family’s safety

ETL LISTED: Approved by the ETL and in conformity with UL 2034; we provide a 60-day money-back guarantee and 5-year warranty for all X-SENSE carbon monoxide detectors and smoke alarms; if you have any questions, please feel free to contact us, and we will get back to you within 24 hours

Keep your family safe with this easy to use digital-display, 10-year battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

Easy-to-read backlit digital display shows temperature and CO concentration; Peak Level feature displays the highest concentration of carbon monoxide measured

Built-in 10-year lithium battery offers continuous protection for the life of the carbon monoxide detector

A loud 85-decibel alarm sounds when CO levels reach dangerous levels

10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety

All first alert CO alarms are rigorously tested to meet UL standards

First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

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

HIGHEST QUALITY, most accurate electrochemical co sensor technology

CONVENIENT, end of life chirping signal

HELPFUL, 2 silence features that silence both alarm and low-battery chirp

FEATURES, 9-Volt Battery and all necessary mounting hardware

Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

Electrochemical CO Sensor is the most accurate technology available

Two Silence Features Silence Low Battery Chirp For up to 8 Hours

End of Life Signal

Tamper Resistant Locking Pin Locks Alarm Cover to Prevent Removal of Battery

9V Battery Included