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10 Best Travel Portable Carbon Monoxide Detector in The UK

Last updated on 08/07/2025

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GasDoc DS-399 Carbon Monoxide Detector, 168HR Standby, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue

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Why We Love It

Portable and lightweight design.
Customizable alarm thresholds available.
Long battery life for trips.

Main Highlights

carbon monoxide detectors portable carbon monoxide detector for travel carbon monoxide detector camping battery powered meter alarm low level home rv smart tester co air quality
Carbon Monoxide Detector: The DS-399 Portable Carbon Monoxide Detector can detect CO levels ranging from 0 to 1000 PPM. It also allows you to set custom alarm thresholds for even earlier detection, ensuring your safety. In addition, the CO meter monitors real-time temperature and humidity, providing you with accurate environmental data
Powerful Rechargeable Battery: Featuring a powerful 1000mAh lithium battery, this CO alarm is equipped with Type-C charging capability, ensuring minimal downtime. A full charge provides up to 168 hours of continuous use, making it a reliable choice for long trips and extended outdoor stays
Easy to Carry: This handheld CO tester is designed to be extremely compact, roughly the size of your palm. Its small size makes it easy to carry, whether tucked in your pocket or attached to your luggage using the included lanyard. Its portability ensures that safety is always within reach during your travels
Audio-visual Alarm: The detector allows you to set custom CO alarm thresholds. When the gas concentration exceeds the set alarm threshold, the device emits an audible alarm, and the ring indicator light below the screen changes color based on the alert level. This dual alert system provides double protection for your safety

LSENLTY Portable Carbon Monoxide Detectors for Travel, Car, Vehicle, Aircraft, CO Notification Function, 120 Hours Standby Time, Carbon Monoxide Detector for Camping Indoor Outdoor

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Why We Love It

Long-lasting 120 hours standby.
Portable and compact design.
Real-time CO concentration display.

Main Highlights

【120 hours standby time】: Built-in 1000mAh large-capacity rechargeable battery. Equipped with a Type C charging port, it can use the fast charging protocol. It takes only 90 minutes to fully charge the carbon monoxide detector. The standby time after full charging reaches 120 hours. Energy-saving mode designed specifically for outdoor use. If the carbon monoxide detector is not activated by the button within 5 minutes, the device will automatically enter power-saving mode. In power-saving mode, the product will continue to detect carbon monoxide in the surrounding environment. When carbon monoxide is detected in the surroundings, the screen will automatically light up and give a reminder.
【Portable design】: Portable and compact shape specially designed for outdoor and contact use, size: 7.6 x 7 x 3cm, weight: 120g, with shoulder strap and magnet design. It can be hung on RV, car, etc. You can also use the magnetic suction function to adsorb to metal surfaces when camping outdoors. The compact design can be carried in a bag, which increases the sense of security on your journey.
【3 in 1 Portable Carbon Monoxide Detector】: The carbon monoxide detector uses an electrochemical sensor with an update time of up to 1 second. The high-resolution color screen can display accurate temperature, humidity and carbon monoxide concentration simultaneously. The carbon monoxide measurement range is 0-500PPM with an accuracy of ±5PPM. The temperature measurement range is -10°C to 50°C (14°C to 122°F) with an accuracy of ±2°F, and the humidity measurement range is 0-95% with an accuracy of ±5%.
【Notification Function】: Compared with traditional CO detectors, this upgraded portable carbon monoxide detector allows you to clearly see the carbon monoxide concentration value and clear concentration range from the HD screen.
【CO Range】: When the surrounding CO concentration value is 【0~50ppm】, the screen will keep flashing 【green】, indicating that the surrounding environment is safe. When the surrounding CO concentration value is 【51~100ppm】, the screen will keep flashing 【yellow】, indicating a warning, the surrounding CO gas is beyond the normal range, so you need to be vigilant and open the window in a timely manner to ventilate. When the surrounding CO concentration value is【101~500ppm】, the screen will keep flashing 【red】, indicating danger and sounding an alarm.
【How do I check that the CO detector is working properly?】: [Step 1]: Place a lit cigarette in the rear vent of the detector, and within 1-2 minutes, the display will show an increase in CO value. Prove that the detector is working properly. [Step 2]: When the carbon monoxide concentration exceeds 50PPM, the CO detector will sound an alarm. Carbon monoxide concentration value can be displayed up to 500PPM.

DS-100 Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, Rechargeable 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV

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Why We Love It

Portable and lightweight design.
Real-time temperature and humidity monitoring.
Long-lasting battery with fast charging.

Main Highlights

Carbon Monoxide Detector: The DS-100 is a 3-in-1 portable carbon monoxide detector that can detect carbon monoxide levels from 0 to 1000ppm, it will alert you when the concentration reaches 50 ppm. This allows you to detect and mitigate risks at low level carbon monoxide. It also measures temperature and humidity, enables you to observe temperature and humidity in real time, convenient for daily use
Large Capacity Battery: The CO detector features a powerful 1000mAh lithium battery with Type-C fast charging support, eliminating the need for frequent replacements and ensuring long-lasting operation. A single full charge lasts 140 hours, providing reliable safety during extended trips, making it an ideal travel companion
Easy to Carry: The CO Meter is designed to be compact and lightweight, measuring 7.6x6x3 cm, making it easy to fit into your luggage without occupying much space. The included lanyard allows for easy carrying, even when traveling light. Ensuring safety and peace of mind wherever your journey takes you
Audio-visual Alarm: Provides an audio-visual alarm function. In default mode, when the carbon monoxide concentration reaches and exceeds 50ppm, the screen's yellow or red indicator bars will flash, accompanied by a high-decibel alarm. As the carbon monoxide concentration increases, the alarm frequency accelerates, enabling you to promptly detect danger and protect yourself
What You Get: You will receive DS-100 Carbon Monoxide Detector, Type - C Cable, Outdoor Special Rope Buckle, User Manual

YOJOCK Portable 3-in-1 Carbon Monoxide Detector, Rechargeable CO Detector with Temperature & Humidity, 1000mAh Battery, Loud Audible & Visual Alarm for Home, Travel, RV & Camping (White)

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Why We Love It

Reliable long-lasting sensor.
Portable and rechargeable design.
Real-time data with LCD display.

Main Highlights

[YOJOCK 3-in-1 Carbon Monoxide Detector] The YOJOCK portable carbon monoxide detector features a reliable electrochemical sensor with a 10-year lifespan. It continuously monitors CO levels and displays real-time data on the LCD screen. CE certified, ensuring safety in homes and motorhomes.
[Travel Rechargeable CO Detector – CO, Temperature & Humidity] The YOJOCK CO detector measures carbon monoxide, temperature, and humidity levels. Powered by a 1000mAh rechargeable battery, it offers long-lasting use. Ideal for carbon monoxide detectors in households, motorhomes, boats, and campsites.
[Accurate CO Measurement – 0-999 ppm] The YOJOCK CO detector measures CO levels from 0-999 ppm with ±5 ppm accuracy, covering 20-40 m². Perfect for spring and summer, especially in poorly ventilated spaces, motorhomes, camping, grilling, and outdoor activities. Ideal for areas with fireplaces or gas heaters to ensure air quality and safety.
[LCD Display & Loud 85dB Alarm] Data is displayed on the LCD screen, and a loud 85dB alarm is triggered when CO levels exceed 50 ppm, ensuring early detection.
[Energy-Saving & Low Battery Warning] The device enters energy-saving mode when the green light appears, extending battery life while providing continuous protection. A loud warning alerts you when the battery is low, reminding you to recharge the CO detector for your safety.
[Versatile Placement] The carbon monoxide detector can be placed on flat surfaces or mounted on a wall. Compact and discreet, it fits seamlessly in any environment.
[Easy to Use & Versatile Placement] With a compact design, self-test function, and low battery alert, this detector is simple to use. It can be placed on a surface or mounted on the wall, making it perfect for Travel Carbon Monoxide Detectors or home use.
[Package Includes] 1 x Carbon Monoxide Detector, User Manual, Carrying Strap, Weight: 2.4 oz.

WOLF SHIELD Carbon Monoxide Detector CO Alarm Battery Sealed 10 Year Life Portable Mini CO Detector with Digital Display Test Silence Function for Home,Campervan,Car,Gas Equipment Room,Boats and More

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Why We Love It

10-year sealed battery life.
Highly accurate and reliable.
Dual alarm with LEDs.

Main Highlights

Highly accurate and reliable long life electrochemical carbon monoxide alarm detector, 10 year sealed battery life, battery operated.
WOLF SHIELD carbon monoxide detector has a dual alarm with a loud audible alarm and 3 flashing LED lights.82dB to 85dB,Flashing red, yellow and blue LEDs.
The CO alarm is tested conforming to the EN 50291-1: 2018 standard, and got the EN 50291-1: 2018 certification.
Carbon monoxide detector is small, sturdy,compact,durable and portable, size:1.06*1.06*0.31inch, weight:76.5g, easy to carry,travel.
Mute function: In the event of a CO sensor failure or low battery, press the mute button to mute the CO detectors for 12 hours, other alarms can also be muted, but not beyond 300ppm.
Weekly self-tests are recommended, and the Test/Silence button of this carbon monoxide monitor allows you to test the carbon monoxide alarms at the touch of a button.
WOLF SHIELD Low level CO detector with display from 25ppmand this CO alarms can alarm in the 50ppm range, the duration of alarm depends on the concentration of carbon monoxide and other factors.
Wide range of uses: This Carbon monoxide detectors is suitable for bedrooms, living rooms, Kitchen and places where fuel is burned such as fireplaces, gas stoves or boilers,an essential life-saving tool for every home that uses gas or solid fuel for heating.suitable for caravans, motorhomes ,boats,office,car and more.

FireAngel Digital Carbon Monoxide Detector with 10-Year Sealed for Life Battery - FA3322 Humidity, Temperature and CO Alarm - Portable Carbon Monoxide Alarms for Home and Travel - CO Detector Monitor

3% Off

Why We Love It

Certified to Kitemark standards.
Provides written safety instructions.
10-year sealed battery.

Main Highlights

PEACE OF MIND: With a digital display and an advanced sensor, the FA3322 offers the highest level of CO detection for your home. When high CO levels are detected, 4 loud chirps, a red LCD, and flashing safety advice will alert you to ‘EVACUATE!’.
TEMPERATURE AND HUMIDITY ALERTS: The FireAngel carbon monoxide alarm also provides temperature and humidity readings. Warnings will sound if either reach extreme highs or lows, making the device perfect for bedrooms and living spaces.
LIFETIME BATTERY: Each digital CO monitor contains a 10-year battery sealed within, offering protection for the lifetime of the device without ever needing to change the batteries.
LOW LEVEL CO WARNING: When low CO levels are detected over a sustained period, an early ‘pre alarm' will sound. The alarm pattern includes 1 short chirp followed by 1 long chirp, an amber LCD screen, and a flashing ‘WARNING’ with CO PPM values.
PORTABLE CARBON MONOXIDE DETECTOR: Each device comes with an integrated mounting bracket and screws for an easy-to-fit setup. Measuring 120 x 76 x 31 mm, it’s compact enough to travel with, providing on the go holiday protection.
SAFETY ASSURED: The FA3322 carbon monoxide monitor has been rigorously tested and is certified to Kitemark standard KM551504. Suitable for domestic premises only.
FIREANGEL HOME PROTECTION: In addition to our CO detectors for home use, 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.

TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

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Why We Love It

Portable and lightweight design.
Early warning for safety.
Visual and audible alarms.

Main Highlights

Carbon Monoxide Detector: TopTes CT-300 is an ideal portable CO tester to help you detect CO gas concentrations timely and accurately, reducing the risk of CO poisoning and protecting your life. It is a must-have tool for homeowners, drivers, campers, DIY-ers, tourists, etc
Swift & Precise Measurement: The CT-300, with an advanced electrochemical sensor head, swiftly detects CO levels from 0-5000 ppm. Its sensitivity ensures early warnings, allowing timely actions to prevent health risks. Accurate readings empower quick decisions, promoting safety and well-being. Versatile and portable, it guards against CO in various settings, ensuring peace of mind
Visual & Audible Alarm: The travel CO detector uses both visual and audible alarms. When the concentration of CO reaches the alarm threshold, the screen changes color and emits an urgent alarm sound to alert you of the presence of CO gas in your surroundings, allowing you to promptly detect the danger, protect yourself
User-Friendly Functions: With high-quality ABS and PC material and anti-slip edge texture, CT-300 is durable and portable; It can be used for 40 hours with new batteries; Low-power indicator will remind you of time to change batteries; It will automatically switch off when not in operation or when no gas is detected within 10 minutes to save power; Backlit screen for easy viewing, adaptable to dim environments
What You Get: You will receive CT-300 Carbon Monoxide Detector, Protective Case, AAA Batteries, User Manual

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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Why We Love It

Loud alarm alerts immediately.
Certified by British Standards.
Portable and versatile design.

Main Highlights

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.

FireAngel Carbon Monoxide Alarm and Detector - FA3313 10-Year Sensor Life CO Alarm for Home with 1-Year Replaceable Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor - White

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Why We Love It

Loud clear alarm alert.
Portable for travel safety.
Certified by British Standards.

Main Highlights

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 CO SENSING: With increased CO sensing capabilities, the alarm’s high sensitivity mode will activate if it predicts CO levels will rise to or above 180 ppm, providing a quicker alert.
BATTERIES INCLUDED: Each CO monitor is fitted with 2 x 1 year replaceable AA batteries. A flashing amber '!' and an audible beep will alert you when the batteries need 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.
TRAVEL CARBON MONOXIDE DETECTOR: Measuring 119 x 62 x 38 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: The FA3313 CO monitor holds CE and UKCA marks and is certified to BS EN 50291-1:2018 and BS EN 50291-2:2019. It is suitable for all domestic premises, including static and mobile homes, caravans, motor caravans, and boats.
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.

3-in-1 Carbon Monoxide Detectors,Portable Carbon Monoxide Detector for Travel with Temperature & Humidity Display,Carbon Monoxide Detector Battery powered for Home/RV, Accurate & Easy to Install

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Why We Love It

Compact and multi-functional design.
Accurate CO level detection.
Easy to install anywhere.

Main Highlights

3-in-1 Portable Carbon Monoxide Detector – Compact, Reliable, and Multi-functional，Real-time Monitoring & Multi-purpose: Our 3-in-1 Carbon Monoxide Detector is not just a CO alarm but also a real-time temperature and humidity monitor. Whether at home or on the go, it helps you stay informed about your surroundings and ensures a safer environment for you and your loved ones.
Advanced CO Sensor for Accurate Detection: Carbon Monoxide Detector equipped with a highly sensitive electrochemical sensor, this device accurately detects CO levels from 0 to 999 PPM. high reliability, more responsive, when the CO gas concentration reaches the dangerous alarm level ,the 85 decibel alarm sounds and Light alarm will work.
Alarm Criteria:Easy To Read,Digital LED display shows the level of carbon monoxide the CO detector is sensing, 3 LED status indicates.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 AAA batteries (Not Included), no socket required, not affected by power outages, and can continuously monitor carbon monoxide levels to ensure your family's safety.
Widely Used - 3 in 1 Travel Carbon Monoxide Detector are Suitable for Bedroom, Kitchen, Living Room, Bathroom, Apartment, Garage, Office, Restaurant, Hotel, etc.

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We scanned 1653 products

We reviewed these offers relevant to the Travel Portable Carbon Monoxide Detector within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like GasDoc, LSENLTY, YOJOCK, WOLF SHIELD, Fireangel, TOPTES, Fenary, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Travel Portable Carbon Monoxide Detector in the market, we considered we took a deep dive into 8266 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is GasDoc DS-399 Carbon Monoxide Detector, 168HR Standby, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue. We love many things about this product by GasDoc. What sets it apart from the competition is Portable and lightweight design. , Customizable alarm thresholds available. , Long battery life for trips. .
The best value product for most shoppers and where user satisfaction is continuously the highest is LSENLTY Portable Carbon Monoxide Detectors for Travel, Car, Vehicle, Aircraft, CO Notification Function, 120 Hours Standby Time, Carbon Monoxide Detector for Camping Indoor Outdoor by LSENLTY based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Travel Portable Carbon Monoxide Detector and the best cost-to-value ratio is 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 - Whiteat Fireangel with a 41% discount.
Our list of the best Travel Portable Carbon Monoxide Detector is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Travel Portable Carbon Monoxide Detector in The UK

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We scanned 1653 products

We concluded that: