Carbon monoxide alarm technology has advanced significantly, ensuring better safety for homes and families. The 10 best carbon monoxide alarms available in 2025 offer a range of features, including smart connectivity, voice alerts, and enhanced sensitivity to detect even the smallest amounts of this dangerous gas. These alarms are designed to provide peace of mind, with many models featuring battery backup and easy installation options. Investing in a reliable carbon monoxide alarm is essential for protecting your loved ones from the silent threat of CO poisoning.
SALE
−$9.86
Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
- Electrochemical sensor technology detects CO gas
- Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included); Install on a wall of your home or place on a tabletop
- Easy to take along for hotel and vacation rental monitoring
- Green LED indicates power to the carbon monoxide detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
- Event Memory records the last time carbon monoxide was detected or when the unit was last tested
$18.13
SALE
−$13.49
Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
- Easy Installation - simply plug-in to a standard, 120V outlet in your home
- 2-AA battery backup provides protection during a power outage
- 85-decibel alarm announces when carbon monoxide is detected
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
- Test-Hush Button makes testing the detector or silencing false alarms easy
$24.50
SALE
−$19.00
First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
- 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 upto 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
$27.99
Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
- Electrochemical sensor technology detects CO gas
- Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included)
- Conveniently designed & portable: simple to install on a wall of your home or place on a tabletop
- Green LED indicates power to the smoke detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
$27.94
First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
- 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 , Battery Replaceable - Yes
- 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
$19.99
SALE
−$4.81
Carbon Monoxide Detector, Replaceable Battery-Operated Carbon Monoxide Alarm Detectors with Digital Display & LED Lights. CO Alarm Applicable to Home, Warehouse
- The carbon monoxide detector alarm continuous monitoring of Carbon Monoxide levels to keep your family safe. Operated by 3 * 1.5V AA batteries (not included),portable and easy installation,no need for socket, not affected by power failure, can be installed anywhere!
- Fast and Accurate Detection：The carbon monoxide detector is built-in advanced electrochemical CO sensor that provides precision alarms for fast and accurate detection of carbon monoxide levels. When the carbon monoxide concentration exceeds the specified value, an alarm warning of more than 85 decibels will be issued. To ensure complete protection, be sure to place one on every floor of your home and in every bedroom.
- LCD Digital Display and LED Indicators：Simple to use,with a single test/reset button,when a dangerous level of carbon monoxide is detected the red LED will flashes and a loud alarm pattern will sound--Loud 85 decibel alarm with LED Flash.
- Portable and Easy to Install：The carbon monoxide detector is easy to install without rewiring. It can be mounted on wall or ceiling（Please refer to the instruction manual for the specific location of the carbon monoxide sensor installation）, This CO detector includes mounting screws and anchors,. It is an ideal carbon monoxide quotation device for home use
- Alarm standard: 50ppm, alert within 60 to 90 minutes; 100ppm, alert within 10 to 40 minutes; 300ppm, alert within 3 minutes. Note: When you test the detector, please do not use gas blow the hole directly.
$9.18
SALE
−$2.00
2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office
- Sound and Light Alarm - When dangerous carbon monoxide levels are detected,Carbon Monoxide Detectors activates a loud 85-decibel warning accompanied by a flashing red LED,PPM Value Display,Our carbon monoxide detector provides Real-time monitoring of carbon monoxide gas levels,ensuring you and your family are alerted promptly.
- High Sensitivity & Rapid Response - Featuring an advanced Carbon Monoxide Detectors Chip and electrochemical sensor, this CO Alarm quickly detects odourless, invisible, and life-threatening carbon monoxide.It responds swiftly to protect your loved ones in critical moments.
- Easy Installation -A single test/reset button simplifies operation. Powered by 3 x 1.5V AAA batteries (not included), this Carbon Monoxide Alarms offers portability and flexibility. No need for power sockets or worrying about outages—install it anywhere in your home with ease.
- Multiple Alarm Standards for Precise Alerts - Be informed of varying CO levels with these alarm settings:50ppm: Alarm triggers within 60 to 90 minutes.100ppm: Alarm triggers within 10 to 40 minutes.300ppm: Alarm triggers within 3 minutes.Stay ahead and take timely action to ensure safety.
- Versatile Application for Every Space - Perfect for a wide range of environments, including your kitchen, bedroom, bathroom, hotels, or even outdoor activities like barbecuing or in parking garages. Wherever carbon monoxide might pose a threat, this detector ensures peace of mind.
$15.99
Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen
- High Accuracy and Reliability:Shyeeh carbon monoxide detectors has a built-in advanced electrochemical sensor that detects dangerous CO levels more accurately and alarm more quickly.
- Alarm Criteria:Safeguard your home with Shyeeh co detector specific alarm thresholds: 50ppm (alert within 60-90 mins), 100ppm (within 10-40 mins), and ≥300ppm (within 3 mins). In case of danger, the carbon-monoxide detectors gives an alarm of no less than 85dB to 215-430ft²(20-40m²) to alert you.
- Bttery Pwered,Easy to Istall:You can mount carbon monoxide alarm on the wall or ceiling with screws (Include). Powered by 3 * 1.5V AA batteries (Not Included), no socket required, not affected by power outages, and can continuously monitor carbon monoxide levels to ensure your family's safety.
- Real-time Data LCD display:The co monitor provides 24-hour real-time monitoring, making it easy to read the level of carbon monoxide in your surroundings and protect your family from an invisible threat.
- Home Protection:According to data analysed in the United States, a home fire occurs every 38 seconds. The earlier the danger is recognised, the risk of death is reduced by 50%. The carbon monoxide detectors monitor will protect your home from the dangers of CO and eliminate the need to pay high detection fees for suspected carbon monoxide leaks.
$8.99
SALE
−$6.80
Combination Gas & Carbon Monoxide Detectors Plug in, 2-in-1 Natural Gas Detector & Carbon Monoxide Alarm, CO Detector Alarm & Propane, Methane, Explosive Gas Detector for Home,RV,Easy to Install
- 【Hembisen Plug in Combination Gas & Carbon Monoxide Detectors 】 This is an upgraded 2-in-1 gas and carbon monoxide detector with plug-and-play, digital display and 85 dB alarm.
- 【2-in-1 Gas & CO Sensors】Adopt catalytic combustion sensor and electrochemical sensor for sharper sense of smell and accurate.
- 【Power Saving Mode Design】When there is no dangerous gas around, the combination gas and carbon monoxide detector will automatically turn on the power saving mode and only show green light.
- 【Digital Display & 85dB Alarm】When combustible gas or carbon monoxide gas concentration is detected to reach the default value, the combination gas and carbon monoxide detector will display LEL or PPM, and at the same time, it will emit 85dB alarm sound.
- 【2-in-1 Detection Function】Can detect carbon monoxide gas and combustible gas; combustible gases include natural gas,LNG, LPG, propane, methane and etc
$27.19
SALE
−$28.56
Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
- Easy Installation - simply plug-in to a standard, 120V outlet in your home
- 9-volt battery backup provides protection during a power outage
- Digital LED display shows the level of carbon monoxide the CO alarm is sensing
- 85-decibel alarm announces when carbon monoxide is detected
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
$42.94
Last update on 2025-05-01 / Affiliate links / Images from Amazon Product Advertising API