Best Carbon Monoxide Detectors 2026

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Last Updated - 03.02.2026

Best Choice

01

X-Sense

X-Sense Carbon Monoxide Detector, TÜV Rheinland Certified, 10 Year Sensor, CO Detector with Replaceable Battery and Digital Display, Carbon Monoxide Detector with Test Button, XC0C-SR, Pack of 2

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25% Off
9.8

Exceptional

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Main highlights

Versatile placement options: this freestanding CO detector can be placed on any flat surface, such as a desk, bookshelf or nightstand; screws for wall mounting are also included
Slim and compact: this small and discreet CO detector measures just 75 × 142 × 32 mm and looks good in any room. Style and safety go hand in hand here
Intuitive operation: thanks to the separate buttons, this detector is quick and easy to use even in emergency situations; it provides reliable access to important functions such as checking CO peaks or testing/mute the alarm
Easy to understand: the current CO value is displayed on a clear display; a three-colour LED informs you at a glance about the status of the detector: red for alarm, yellow for error or low battery and green for normal operation
10 YEAR LIFESPAN Protect your loved ones from the silent threat of carbon monoxide with this reliable CO detector that will accompany you for 10 years! The detector is powered by replaceable AA batteries with a service life of 3 years

26,99 € 35,99 €(25% Off off)
02

Smartwares

Smartwares Carbon Monoxide Detector, 10 Year Sensor, 1.5 Test Winner Rating, with Display and Test Button - FGA-13041

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9.6

Exceptional

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Main highlights

TEST BUTTON Make sure your device is working properly by testing it regularly (once per month). If your CO detector beeps 5 times during testing, it will work fine.
Effective protection against carbon monoxide (CO): this detector with a range of 20 to 40 m² has an electrochemical sensor that detects the CO in the air, even with a small amount (approx. 27 ppm).
Easy to install: the necessary mounting material is included. Install one CO detector per floor, near your combustion equipment and near rooms. Make sure the alarm of 85 dB is audible by everyone.
DISPLAY: The display of the carbon monoxide detector shows you the CO concentration (PPM) and shows possible malfunctions: batteries or device at the end of life, incorrectly installed.
10 years sensor: the sensor of this CO detector has a service life of 10 years. The detector is powered by 3 AA batteries which are included. You will be warned by bright and acoustic signals that you need to change the batteries or replace your device.

23,99 €
03

X-Sense

X-Sense XC0C-SR Carbon Monoxide Detector, TÜV Rheinland Certified, 10 Year Sensor, CO Detector with Replaceable Battery and Digital Display, Carbon Monoxide Detector with Test Button

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20% Off
9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile placement options: this freestanding CO detector can be placed on any flat surface, such as a desk, bookshelf or nightstand; screws for wall mounting are also included
Slim and compact: this small and discreet CO detector measures just 75 × 142 × 32 mm and looks good in any room. Style and safety go hand in hand here
Intuitive operation: thanks to the separate buttons, this detector is quick and easy to use even in emergency situations; it provides reliable access to important functions such as checking CO peaks or testing/mute the alarm
Easy to understand: the current CO value is displayed on a clear display; a three-colour LED informs you at a glance about the status of the detector: red for alarm, yellow for error or low battery and green for normal operation
10 YEAR LIFESPAN Protect your loved ones from the silent threat of carbon monoxide with this reliable CO detector that will accompany you for 10 years! The detector is powered by replaceable AA batteries with a service life of 3 years

15,19 € 18,99 €(20% Off off)
04

Smartwares

Smartwares Carbon Monoxide Detector, 10 Year Sensor, 1.5 Test Winner Rating, with Display and Test Button - FGA-13041

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

TEST BUTTON Make sure your device is working properly by testing it regularly (once per month). If your CO detector beeps 5 times during testing, it will work fine.
Effective protection against carbon monoxide (CO): this detector with a range of 20 to 40 m² has an electrochemical sensor that detects the CO in the air, even with a small amount (approx. 27 ppm).
Easy to install: the necessary mounting material is included. Install one CO detector per floor, near your combustion equipment and near rooms. Make sure the alarm of 85 dB is audible by everyone.
DISPLAY: The display of the carbon monoxide detector shows you the CO concentration (PPM) and shows possible malfunctions: batteries or device at the end of life, incorrectly installed.
10 years sensor: the sensor of this CO detector has a service life of 10 years. The detector is powered by 3 AA batteries which are included. You will be warned by bright and acoustic signals that you need to change the batteries or replace your device.

13,16 €
Value for Money

05

X-Sense

X-Sense Smart Carbon Monoxide Detector XC0C-iR, TÜV Rheinland Certified, Mute Switch via App, CO Detector with LCD Digital Display, Carbon Monoxide Detector with Replaceable Battery, Pack of 1

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24% Off
9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

TRAVEL FRIENDLY This compact CO detector measures only 142×75mm and fits easily in your bag or suitcase. So you are protected on the go, where unknown CO releases can occur. The device is powered by a replaceable CR123A battery and can therefore be used anywhere
Note: The XC0C-iR carbon monoxide detector connects directly to the app via a 2.4 GHz Wi-Fi network. It does not require a base station
Mute by fingertip: once this smart CO detector is triggered, the app will show changes in CO concentration (PPM) in real time; after confirming everything is fine, you can mute the alarm with a single tap in the app (Note: the mute function will be disabled if the concentration exceeds 300 ppm)
INSTANT NOTIFICATIONS Get real-time alerts on your phone for CO alarms, low battery alerts and malfunctions, and preventative CO alerts. Thanks to the device sharing function, all family members are informed in case of danger
Freestanding or wall mounting: Place this CO detector on any flat surface or attach it to the wall using the screws provided. It is best to install it at breathing height and keep it away from obstacles
Easy to Use Single buttons allow you to test/mute the alarm at the touch of a button or check the peak values. This increases ease of use and improves accuracy
Clear status indicator: The backlit display shows the current CO concentration (PPM) clearly and clearly. A 4-colour LED indicator informs you of the status: red for alarm, yellow for error or low battery, green for power supply and blue for pairing mode
10 YEARS LIFESPAN This CO detector has a durable electrochemical sensor that works reliably for 10 years, ensuring long-term safety

22,79 € 29,99 €(24% Off off)
06

Yfwsrecinoe

Carbon Monoxide Detector with 10 Year Lithium Battery, Voice Alarm & LED Display - CO Alarm EN50291 Certified, for Home, Apartment, Motorhome (Pack of 1)

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29% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Tested quality and reliable customer service certified according to EN 50291 by an accredited EU testing laboratory - for tested quality according to applicable safety standards. We offer reliable customer service and support you with any questions about the product.
RELIABLE DUAL SENSOR TECHNOLOGY - 10 YEAR PROTECTION FOR YOUR HOME: Equipped with a high quality electrochemical sensor, our CO detector provides reliable protection for up to 10 years - compared to conventional devices with only 3 years lifespan. Rely on modern technology for long-term safety.
PRECISE CO DETECTION - Less false alarms, more safety: The intelligent sensor detects dangerous carbon monoxide quickly and accurately - for an early warning in the event of real danger. Reduced false alarms provide more peace in everyday life and a safe feeling for the whole family.
EXTRA LOUD ALARM & BATTERY MONITORING - SAFETY YOU CAN HEAR: In case of CO hazard, a penetrating alarm sounds above 85dB - loud enough to be heard through walls. The integrated battery warning informs you in time about low charge level. For maximum safety - day and night.
EASY TO INSTALL & INTEGRATED 10 YEAR LITHIUM BATTERY: Thanks to the built-in high-performance battery, no battery change is required - 10 years protection with just one installation. Installation is quick and easy with the included accessories - without any specialist knowledge.

14,90 € 20,99 €(29% Off off)
07

CPVAN

CPVAN Carbon Monoxide Detector with 10 Year Sensor, CO Detector with Replaceable Battery and Digital Display, Carbon Monoxide Detector with Test Button, European Standard EN50291, Set of 1

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile placement options - This freestanding CO detector can be placed on any flat surface, e.g. on a desk, bookcase or bedside table; screws for wall mounting are also included.
Portable and easy - After you remove the plastic paper from the 3 AA alkaline batteries and inserted them correctly, the device turns on automatically. The lightweight and compact design makes this CO detector very suitable for mobile use, especially when travelling, camping with a tent, in the car or in the motorhome. It can protect you from carbon monoxide poisoning at any time.
Intuitive operation - With the separate buttons, this detector is quick and easy to use even in emergency situations; it provides reliable access to important functions such as checking CO peaks or testing/mute the alarm.
Easy to understand - The current CO value is displayed on a clear display; a three-colour LED informs you at a glance about the status of the detector: red for alarm, yellow for malfunction or low battery and green for normal operation.
10 year lifespan - Protect your loved ones from the silent threat of carbon monoxide with this reliable CO detector that will accompany you for 10 years! The detector is powered by replaceable AA batteries with a life of 2 years.

17,99 €
08

CPVAN

CPVAN Carbon Monoxide Detector with 10 Year Sensor, CO Detector with Replaceable Battery and Digital Display, Carbon Monoxide Detector with Test Button, European Standard EN50291, Set of 1

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Versatile placement options - This freestanding CO detector can be placed on any flat surface, e.g. on a desk, bookcase or bedside table; screws for wall mounting are also included.
Portable and easy - After you remove the plastic paper from the 3 AA alkaline batteries and inserted them correctly, the device turns on automatically. The lightweight and compact design makes this CO detector very suitable for mobile use, especially when travelling, camping with a tent, in the car or in the motorhome. It can protect you from carbon monoxide poisoning at any time.
Intuitive operation - With the separate buttons, this detector is quick and easy to use even in emergency situations; it provides reliable access to important functions such as checking CO peaks or testing/mute the alarm.
Easy to understand - The current CO value is displayed on a clear display; a three-colour LED informs you at a glance about the status of the detector: red for alarm, yellow for malfunction or low battery and green for normal operation.
10 year lifespan - Protect your loved ones from the silent threat of carbon monoxide with this reliable CO detector that will accompany you for 10 years! The detector is powered by replaceable AA batteries with a life of 2 years.

18,99 €
09

Safeliveo

Safeliveo CO Detector with Replaceable Battery, Carbon Monoxide Detector with Peak Memory and LCD Display, 10 Year Sensor, with Test Button, for Home and Caravan, EN 50291, Standalone (Pack of 1)

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40% Off
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Three Color LED Indicator】Multi-color LED let you know the status clearly: red for alarm, yellow for error or low battery and green for normal operation. The green standby indicator can be turned on or off by briefly pressing the test button twice.
Two installation options: this compact and discreet carbon monoxide detector measures only 105 × 32.7 × 60 mm and can be free-standing on any flat surface, such as a table, bookcase or bedside table, or attached to the wall with the included screws.
Test and mute button: Press the test button once, it will generate a rising alarm sound - the device works perfectly. Short press can mute the alarm for 9 minutes (red LED flashes slowly). However, with a CO concentration above 300 ppm, mute is not possible with this carbon monoxide detector.
Replaceable batteries: this CO detector comes with 2 interchangeable AA batteries (1 year service life). When the battery is low, a warning sound sounds every 60 seconds and a yellow LED flashes once to remind you of changing the battery.
Peak CO Memory: If you are absent and miss the alarm, the carbon monoxide detector automatically stores the highest CO value that triggered the alarm and keeps the data for 3 days. During this period, the red LED flashes twice every 50 seconds to alert you that a CO limit has been exceeded.
Early warning for low CO concentration: If the carbon monoxide detector detects a CO concentration of 20 ppm over a period of 30 minutes, it triggers an alarm of over 85 dB so that potential hazards can be detected early. Complies with EN 50291-1:2018 standard.
Clear view digital display: Displays the current CO concentration clearly, with a minimum measurement of 10 ppm. The CO detector carbon monoxide detector covers an area of 20 to 40 m² and offers reliable protection in households, motorhomes and when travelling.

14,99 € 24,99 €(40% Off off)
10

GiiHoo

GiiHoo Carbon Monoxide Detector with LCD Display & Battery Operated - Household CO Alarm System, EN 50291 Certified, 10 Year Sensor Life

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

SAFE AND RELIABLE This CO detector meets all safety standards. With integrated test button and battery warning function. In case of false alarm, simply press the test button - the LED flashes for 11 seconds in start mode.
Optical & Acoustic Warning: Loud alarm sound (≥85dB) and flashing LED at hazardous CO concentrations (50-301ppm).
Easy installation: powered by 4 x AA batteries. The combination detector can be easily attached with the included mounting bracket, screws and dowels.
Carbon monoxide detector for domestic use: the advanced electrochemical sensor detects dangerous carbon monoxide (CO) levels in your home and warns you with 4 loud cirpers (85 dB (A) at 4 metres) and a flashing red "CO" LED light. Never ignore this detector.

12,59 €