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Best Test Co2 Melder - Holiday Sale

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Last Updated - 18.12.2025

Best Choice

01

ABUS

ABUS CO2 Detector - CO2WM110 AirSecure - Meter for Air Quality, Humidity and Temperature in the Room - with Alarm and CO2 Traffic Light - 10-Year Sensor

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9.8

Exceptional

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Use: for schools, offices, nurseries or at home – avoid bad air – prevent headaches, discomfort and increased number of aerosols in the breathing air
OLED display: displays CO2 content, temperature, humidity, date and time
Mounting: mount warning detector on the wall or place on chest of drawers, table or similar
Function: CO2 detector for monitoring the CO2 concentration indoors thanks to the NDIR sensor - always see whether the indoor air quality is good, normal or poor (traffic light system)
CO2 sensor: max. Service life of 10 years, then replace the CO2 meter
Alarm: warning tone and change of the LED colour display in case of poor air quality - in case of absence, the alarm message can be viewed later

24,95 €
Value for Money

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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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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9.5

Excellent

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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

18,99 €
04

Putogesafe

Putogesafe Carbon Monoxide Detector with LCD Display, 10-Year CO Detector with Replaceable 3-Year Battery, Portable CO Alarm with Peak Memory for Motorhome/Ship/Room, EN50291-Certified, Pack of 1

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9.3

Excellent

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Main highlights

Memory for CO peak concentration: The LCD display automatically records and stores peak CO levels, allowing you to determine if an alarm was triggered in your absence based on the recorded spikes.
Durable protection: A 10-year service life for CO detectors with 3-year replaceable batteries ensures safety in the home, reducing costs for your family.
Compact and portable design: Wall mounted or freestanding, 2 mounting options available. The compact and portable design of the carbon monoxide detector makes it suitable for a variety of situations, e.g. in offices, hotels and travel.
Child- and elderly-friendly: This CO alarm has a 3-colour LED display (green, yellow, red) that indicates various operating states such as alarm, low battery or malfunction along with sound signals that make it easy to identify the alarm status.
Advanced CO (carbon monoxide) sensor: The CO detector is equipped with an electrochemical CO sensor that quickly and accurately detects dangerous CO concentrations from 23 ppm to 999p pm and emits an alarm sound of more than 85 dB to warn you as early as possible.

14,09 €
05

X-Sense

X-Sense XC01-R Carbon Monoxide Detector, TÜV-Certified, with Digital LCD Display, CO Detector with Replaceable 5-Year Battery and Peak Memory

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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

Precise and reliable: equipped with a Figaro electrochemical CO sensor and a replaceable battery with a life of 7 years
PLEASE NOTE: STANDALONE, NOT COMPATIBLE WITH THE SBS50 BASE STATION
Instant alerts: A loud 85 decibel alarm alerts you of dangerous CO levels early
INTUITIVE LIGHT A 3-color LED indicator flashes red, green or yellow to alert alarm, power supply, or fault
INFORMATIVE DISPLAY An easy to read LCD display shows CO values in real time and stores CO peaks since the previous reset
FLEXIBLE INSTALLATION This detector can be easily installed on the wall or freestanding and can even be used when traveling

20,29 €
06

DGSFFHFSD

Carbon Monoxide Warning Detector LCD Display CO Detector 85 dB Alarm Carbon Monoxide Sensor Carbon Monoxide Detector with Test Button Battery Operated (without Batteries) GAS-96776

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9.1

Excellent

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Warranty and customer service: DGSFFHFSD specializes in the development and production of carbon monoxide alarms. We offer 30-day return policy and long-term customer service. Your satisfaction motivates our team. If you have any further questions, please contact us directly.
LCD display: carbon monoxide as a deadly breathing gas, you cannot perceive it with your natural senses. The LCD of the carbon monoxide detector shows the carbon monoxide concentration when the air contains 30 ppm. Thanks to the LCD display of the gas detector, you can read and monitor the CO concentration at any time and avoid the occurrence of hazards.
Highly accurate CO sensor: the carbon monoxide alarm uses sensors based on The CO detector continuously measures CO densities in its ambient air. As soon as the concentrations reach corresponding limits, these detectors give an audible alarm. As a rule, you will attract attention when flashing LEDs.
Flexible and easy installation: no wiring and sockets required, because our battery operated CO detector screws and wall anchors are available, which can be quickly and easily installed anywhere.
85 dB alarm and battery drive: In an emergency, the carbon monoxide alarm sounds an alarm above 85 dB, which can immediately alert those throughout the house. The carbon monoxide alarm uses the replaceable batteries (2 x 1.5 V AA). A "chirp" every 30 seconds indicates what is reminiscent of low batteries and ensures that you don't miss a battery change. (Batteries not included)

15,59 €
07

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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8.9

Very Good

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Main highlights

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.
Tested quality and customer service with heart: certified according to EN 50291 by an accredited EU laboratory - for tested safety you can rely on. We stand behind our product with a free lifetime return policy and personal customer service - because your safety is important to us.

18,99 €
08

HOMELYLIFE

HOMELYLIFE Carbon Monoxide Detector 85 dB, CO Detector with LCD Display, EN 50291 Carbon Monoxide Alarm with Carbon Monoxide Sensor, Battery Operated (3 AA Batteries Not Included)

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8.7

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

[Our CO alarm monitors the carbon monoxide concentration in the air in real time. When dangerous carbon monoxide values are detected, the red LED flashes and the buzzer emits a continuous 85 dB alarm to protect the life of your family and the safety of your property.
[Digital LCD Display] The screen shows real time CO values in a wide range from 000 to 999 PPM. The blue backlight turns on and displays real-time values when the CO values are above 30ppm, and the detector alerts from 50ppm. The alarm time depends on the level of the carbon monoxide value. In addition, the LCD display shows different characters in different situations to help you identify the problem.
[Buy with confidence] If you meet any quality problems with HOMELYLIFE carbon monoxide detector, please feel free to contact us at any time, we will consistently spare no effort to provide professional service and pleasant experience for every customer!
Safe and reliable: The HOMELYLIFE carbon monoxide alarm complies with the EN 50291 standard and uses an electrochemical sensor with high sensitivity and a service life of up to 5 years, which detects carbon monoxide gas leaks accurately and quickly and protects you from dangers while minimising false alarms.
Package contents: 1 x carbon monoxide detector, 2 x expansion screws, 2 x dowels, 1 x battery removal pen, 1 x user manual (English language not guaranteed).
Easy to install: Simply turn off the back plate from the detector, screw it to the wall or ceiling, insert 3 x 1.5 V AA batteries (not included), place the detector on the back plate and turn it into position. When the batteries are almost empty, an acoustic warning signal will sound. Then you can easily remove the detector from the back panel and replace it with new batteries.

13,99 €
09

DGSFFHFSD

Carbon Monoxide Alarm with LCD Display CO Detector Louder 85 dB Alarm Carbon Monoxide Detector with Carbon Monoxide Sensor Carbon Monoxide Alarm Battery Operated

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8.4

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

Warranty and customer service: DGSFFHFSD specializes in the development and production of carbon monoxide alarms. We offer 30-day return policy and long-term customer service. Your satisfaction motivates our team. If you have any further questions, please contact us directly.
Safe sensors, clear alarm: the carbon monoxide detector uses particularly sensitive sensors. So you measure CO densities in their ambient air continuously. Reach concentrations corresponding limit values, give CO detectors h?rbaren alarm. Mostly flashing LEDs attract your attention.
Robust operation of the sensor: the CO gas detector is made of durable and high quality. High performance sensor, which is sensitive and durable. The operating temperature is 5 °C / 40 °C, and the appropriate relative humidity is 20-90%.
LCD display with CO concentration display: carbon monoxide as a daily respiratory poison you do not perceive with your natural senses. Thanks to the LCD display, you can read and monitor the CO concentration at any time as well as avoid the occurrence of hazards.
Battery operation: the CO detector uses the replaceable batteries (2 x 1.5 V AA). Even more convenient, integrated power cells ensure many years of operation. A chirping every 30 seconds indicates that the battery is low, then you have to replace it. (Batteries not included)

15,99 €
10

Nixiara

Air Quality Monitor - Indoor Sensor, CO2 Reader, Accurate Air Detector Device with LCD Screen, Compact Gas Meter Tracker for Bedroom, Tent, Living Area, Respiratory Safety Tool

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8.1

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

The convenience of travel size: this monitor combines a slim form factor with a space-saving design, providing unmatched flexibility for tabletops or exteriors of handheld use in any environment
QUIET AIR TRACKING With advanced tech sensor tech and low battery chip support, it provides uninterrupted air monitoring in and energy efficient manner to ensure extended use for consistent environmental awareness
Easy to use: the air quality monitor provides easy navigation and a user-friendly user interface with brewing with a
CLEAR REAL TIME DISPLAY Get clear air quality data with a high resolution LCD screen that provides dynamic feedback for better monitoring decisions
-Air Monitoring: Perform multifunctional indoor air tests in CO2, VOCs and more, enabling quality tracking that supports proactive management of indoor environments

8,81 €