Top 10 Carbon Monoxide Detector 2 Pack

Last update: 12-07-2026

1

Kidde

Twin Pack Kidde 5CO Battery Powered Carbon Monoxide Alarm and Detector - 10 Year Sensor Life with AA Batteries

9.5/10

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2

Fireangel

FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home w/Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor w/Test Button - 2-Pack

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• CARBON MONOXIDE ALARMS FOR HOME USE: The advanced electrochemical sensor detects dangerous levels of carbon monoxide (CO) in your home, alerting you with 4 loud chirps (85 dB(A) at 3 metres) and a flashing red ‘CO’ LED light. NEVER IGNORE THIS ALARM.
• TEST BUTTON: Press the large test button to ensure your CO detector is working properly. A loud, high-pitched sound and the red LED flashing four times will verify that the alarm is functioning correctly.
• BATTERIES INCLUDED: Each CO monitor comes with 2 replaceable AA batteries. A flashing amber '!' and an audible chirp will alert you when the batteries need replacing. Test your FireAngel carbon monoxide alarm regularly to ensure it is operational.
• SLEEP EASY FUNCTION: Press the large test button to silence the low battery alert. This activates the Sleep Easy mode on the carbon monoxide monitor, muting the low battery chirp for 8 hours whilst the amber light flashes. Replace the batteries ASAP.
• TRAVEL CARBON MONOXIDE DETECTOR: Each compact device measures 120 x 73 x 35.5 mm and comes with an integrated mounting bracket and screws, allowing for easy wall mounting. With 2 devices per pack, take 1 with you for on the go holiday protection.
• SAFETY ASSURED: The FA6813 detector holds a CE & UKCA mark and has been designed to conform to the standards BS EN 50291-1: 2008 and EN 50291-2: 2019. Suitable for homes in England and Wales, but not for Scottish homes under the new regulations.
• FIREANGEL HOME PROTECTION: In addition to our carbon monoxide detectors, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, smoke, and heat alarms.

9.5/10

Editor's Pick

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3

Kidde

Kidde Carbon Monoxide Alarm - 2 Pack

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• Compact and lightweight battery-powered CO alarm provides essential protection against the dangers of deadly carbon monoxide and provides continuous monitoring of CO levels.
• This small, easy-to-use alarm is ideal for use in all living areas and can be installed on a wall or ceiling or used freestanding on a table or shelf.
• Battery operation – 3 x AA alkaline batteries supplied as standard
• Continuous monitoring of carbon monoxide
• Multi-function green and red LEDs to indicate power and alarm status
• Test/Reset button to allow regular testing of alarm function
• End-of-life alarm alerts user to replace alarm after a minimum of 7 years’ protection
• Warranty 7 years
• BSI certified to EN50291-1:2010
• CE tested and certified

9.5/10

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4

Kidde

2 Pack Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries

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• 10-year Carbon Monoxide sensor accurately detects from 50 ppm of CO gas in the air and emits a loud, clear alarm to alert residents
• LED lights indicate the current status of the carbon monoxide alarm & a low battery warning sounds when they need replacing
• Includes 2 x AA alkaline batteries and wall fixing kit is included for easy setup
• Sleek & compact - Dimensions (HxWxD): 61 x 96 x 38mm
• 3 years manufacturer’s warranty | CE marked, TUV Certified to EN 50291-1:2018 & UKCA tested and certified

9.2/10

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5

Fireangel

FireAngel Carbon Monoxide Detector 10-Year Life Sealed Battery - FA3820 Carbon Monoxide Alarm for Home and Holiday - Portable CO Alarm - Travel Carbon Monoxide Detector and Monitor - White

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• CARBON MONOXIDE ALARMS FOR HOME USE: The advanced electrochemical sensor detects dangerous levels of carbon monoxide (CO) in your home, alerting you with 4 loud chirps (85 dB(A) at 3 metres) and a flashing red ‘CO’ LED light.
• ENHANCED SENSING: The alarm’s high sensitivity mode will activate if it predicts that CO levels will rise to or above 180 ppm, providing a quicker alert and a ‘pre alarm’ with a visual instruction to ‘ventilate'.
• 10-YEAR SEALED FOR LIFE BATTERY: Each CO monitor is fitted with a sealed, tamper proof, 10 year battery that will last the lifetime of the alarm. A flashing amber '!' and an audible beep will alert you when the device needs replacing.
• ALARM MEMORY: Your device will notify you of a CO alarm in your absence. If not silenced, the alarm will continue to sound until CO levels are safe. The red ‘CO’ light will continue flashing as a visual indication of a previous activation.
• PORTABLE CARBON MONOXIDE DETECTOR: Measuring 125 x 67 x 33 mm, this compact, free standing device is travel friendly and provides protection wherever you go. It also includes an integrated mounting bracket and screws for easy wall mounting.
• SAFETY ASSURED: Suitable for all domestic and rental premises, the FA3820 carbon monoxide monitor is CE and UKCA marked, Kitemark certified, and third-party approved by the British Standards Institute (BSI) to BS EN 50291-1:2018 and EN 50291-2:2019.
• FIREANGEL HOME PROTECTION: In addition to our carbon monoxide detectors, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, smoke, and heat alarms.

9.1/10

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6

Kidde

Kidde 7DCOC 7DCO Kidde Carbon Monoxide Alarm, White

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• Battery operated (3AA’s included)
• Two LED’s - Red: Illuminates when in alarm mode, Green: Illuminates when DC power is present, normal operation
• Test/reset button tests CO alarm circuit operation and allows you to immediately silence the alarm
• Digital display continuously displays CO levels detected
• End of life alarm alerts user to replace the alarm after 10-years protection
• It has replaceable batteries
• 10 years sensor and warranty
• Warning! this CO alarm is not a substitute for a smoke or fire alarm

8.9/10

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7

X-Sense

X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Alarm for Home with CO Peak Value Memory, XC0C-SR, 1-Pack

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• 10-Year Lifespan: Protect your loved ones from the silent threat of carbon monoxide for an entire decade with this reliable 10-year CO sensor; powered by replaceable AA batteries that last 3 years
• Versatile Placement Options: This carbon monoxide detector's freestanding design allows you to place it on any flat surface, such as a desk, bookshelf, or bedside table; screws are also included to mount it on the wall
• Sleek and Compact: Measuring just 75 × 142 × 32 mm, this small and unobtrusive carbon monoxide alarm looks good in any room, meaning you never have to compromise style for safety
• Intuitive to Use: Easily use this alarm even in urgent situations thanks to its simple, size-differentiated buttons; enjoy reliable access to critical functions like checking the peak CO levels or testing/silencing the alarm
• Easy to Understand: See the current CO level on a clear display; a tri-color LED tells you the alarm’s status at a glance: red for alarm, yellow for fault or low battery, and green for working normally

8.8/10

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8

Kidde

Kidde 10LLDCO Carbon Monoxide Detector Digital Display with Long Life Sealed Battery Pack of 2

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• Digital display shows current CO level between 11 and 999ppm (parts per million)
• 10 year sealed battery
• 10 year manufacturer's warranty
• Peak level display feature shows high CO levels while not at home
• Kitemarked to BS EN 50291-1: 2018 (domestic use) with CE and UKCA approvals

8.7/10

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9

CPVAN

CPVAN Wireless 3-in-1 Carbon Monoxide Detector with Temperature & Humidity, Carbon Monoxide Alarms for Home Safety, CO Alarm with 10 Years Life, EN 50291, Replaceable Batteries. 2 Pack

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• 【Safety Certification】 Compliance with EN 50291 standard and TÜV approval.
• 【3 in 1 Carbon Monoxide Detector】 Simultaneously detects Carbon Monoxide, Humidity and Temperature! 0 second real-time detection, CO concentration data refresh rate: 4 seconds, temperature and humidity updated every minute, so you always know the air quality of your surroundings.
• 【Carbon Monoxide Alarm】 Continuous monitoring for CO. Digital display of CO levels from 25 ppm. Detector alarms from 50 ppm. The alarm time depends on the level of carbon monoxide concentration and the display screen of the carbon monoxide alarm accurately shows carbon monoxide concentration data. The carbon monoxide alarm will notify you immediately when the concentration reaches a certain level, minimizing false alarms.
• 【AA Batteries Included】 Equipped with batteries, there is no need to buy additional batteries, simply install batteries, test carbon monoxide detector and then mount it on the desired wall. If you want to use the co detector directly without mounting it, you can place it directly on the table. So easy!
• 【10 Years Sensor Life】 This carbon monoxide monitor is built electrochemical sensor to deliver high consistency and reliability for double detection and protection.
• 【Keeping Your Safety】 Place co alarm near the boiler, gas fire and room to rule out any carbon monoxide leaks. The display will tell you not only if carbon monoxide is leaking but at what rate. Every home with wood, coal, gas or oil burning fires should have one.
• 【Wider Detection Range】 CO range: 0 to 999 PPM; Humidity range: 1% to 99%RH (±3%RH); Temperature range: -9℃ to 99℃ (±1). The detector will cycle the alarm when the carbon monoxide concentration exceeds 50 ppm.

8.6/10

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10

HEIMAN

Carbon Monoxide Alarm Detector EN 50291 Certified, CO Alarm Detector, 5-Year Replaceable Battery, 10 Year Sensor

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• Features: Alarm signal volume: approx. 85 dB
• Warning of carbon monoxide poisoning due to incomplete combustion (fireplace/gas boiler)
• 3 x status LED (green = power, yellow = error, red = alarm)
• LED light with self-test function, test button for the test function of the CO warning detector, error warning in case of incorrect function, warning signal if the battery is too low.
• Carbon monoxide CO detector with display and LED status display, certified and tested according to EN 50291.
• Box contents: 1 x CO detector, 2 x 1.5 V DC batteries type AA, 2 x dowels, 2 x screws, 1 x instructions (English language not guaranteed)
• Operating or storage temperature: -10 to +40 °C
• Permissible humidity range: 20% - 95%
• Easy installation (can be attached to the wall or on a flat surface)

8.5/10

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