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Battery Powered Carbon Monoxide Detectors

Our battery powered Carbon Monoxide detectors warn you of Carbon Monoxide with a very loud alarm sound and offer an LED or digital display. They are covered by 5, 7 or 10 year manufacturer's warranties and all of our alarms, as a minimum requirement, comply to the latest British Standards (BS EN50291-1:2010+A1:2012).

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Page 1 (Products 1 to 20 of 23)
Image of the Carbon Monoxide Detector 10 Yr Life - Kidde 5CO

Carbon Monoxide Detector 10 Yr Life - Kidde 5CO

  • FREE delivery
  • Product Life: 10 years
  • Battery: AA batteries included
  • Warranty: 7 year warranty
  • LED status display
  • CE Marked 
  • Kitemarked to BS EN 50291-1:2010 (domestic use)
118 Customer Reviews

1 unit

£12.20 inc VAT

£10.17 ex VAT

2+ units

£11.60 inc VAT

£9.67 ex VAT

5+ units

£11.24 inc VAT

£9.37 ex VAT

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Image of the Digital Display Carbon Monoxide Alarm 10 Yr Life - Kidde 5DCO

Digital Display Carbon Monoxide Alarm 10 Yr Life - Kidde 5DCO

  • FREE delivery
  • Product Life: 10 years
  • Battery: AA batteries included
  • Warranty: 7 year warranty
  • Displays CO levels from 10ppm
  • Peak Level Memory - recalls highest CO levels
  • CE Marked
  • Kitemarked to BS EN 50291-1:2010 (domestic use)
69 Customer Reviews

1 unit

£15.36 inc VAT

£12.80 ex VAT

2+ units

£14.76 inc VAT

£12.30 ex VAT

5+ units

£14.40 inc VAT

£12.00 ex VAT

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Image of the Carbon Monoxide Detector 10 Yr Warranty - Kidde 7CO

Carbon Monoxide Detector 10 Yr Warranty - Kidde 7CO

  • FREE Delivery
  • Product Lifespan: 10 years
  • Battery: AA batteries included
  • Warranty: 10 year warranty
  • Ideal for domestic use and camping / caravans / boats
  • Kitemarked to BS EN50291-1
  • Kitemarked to BS EN50291-2
18 Customer Reviews

1 unit

£13.30 inc VAT

£11.08 ex VAT

2+ units

£12.70 inc VAT

£10.58 ex VAT

5+ units

£12.34 inc VAT

£10.28 ex VAT

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Image of the Digital Display Carbon Monoxide Alarm 10 Yr Warranty - Kidde 7DCO

Digital Display Carbon Monoxide Alarm 10 Yr Warranty - Kidde 7DCO

  • FREE delivery
  • Product Life: 10 years
  • Battery: replaceable AA alkaline batteries included
  • Warranty: 10 year warranty
  • Displays CO levels from 10ppm
  • Peak Level Memory - recalls highest CO levels
  • Ideal for domestic use and camping, caravans & boats
  • Kitemarked to BS EN50291-1 and BS EN50291-2
38 Customer Reviews

1 unit

£16.56 inc VAT

£13.80 ex VAT

2+ units

£15.96 inc VAT

£13.30 ex VAT

5+ units

£15.60 inc VAT

£13.00 ex VAT

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Image of the Combination Carbon Monoxide and Smoke Alarm 10 Yr Warranty - Kidde 10SCO

Combination Carbon Monoxide and Smoke Alarm 10 Yr Warranty - Kidde 10SCO

  • FREE delivery
  • Product Lifespan: 10 years
  • Battery: 9V alkaline battery (included)
  • Warranty: 10 year warranty
  • Voice Alarm and Sounder: Different Warning Messages for Smoke and CO
  • Kitemarked to BS EN 50291-1:2010 (CO alarm for domestic use)
  • Kitemarked to BS EN 14604:2005 (smoke alarm)
  • Suitable for ceiling installation
143 Customer Reviews

1 unit

£18.95 inc VAT

£15.79 ex VAT

2+ units

£18.11 inc VAT

£15.09 ex VAT

5+ units

£17.87 inc VAT

£14.89 ex VAT

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Image of the 10 Year Longlife Battery Carbon Monoxide Detector - Kidde 10LLCO

10 Year Longlife Battery Carbon Monoxide Detector - Kidde 10LLCO

  • FREE delivery
  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the life time of your product – GUARANTEED
  • Warranty: 10 year warranty
  • Suitable for wall mounting and free-standing
  • Kitemarked to BS EN 50291-1: 2010 (domestic use)
28 Customer Reviews

1 unit

£16.80 inc VAT

£14.00 ex VAT

2+ units

£16.20 inc VAT

£13.50 ex VAT

5+ units

£15.84 inc VAT

£13.20 ex VAT

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Image of the 10 Year Longlife Battery Digital Carbon Monoxide Alarm - Kidde 10LLDCO

10 Year Longlife Battery Digital Carbon Monoxide Alarm - Kidde 10LLDCO

  • FREE delivery
  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the life time of your product – GUARANTEED
  • Warranty: 10 year warranty
  • Displays CO levels from 11ppm
  • Reduced sound level test feature
  • Kitemarked to BS EN50291-1 (domestic use)
59 Customer Reviews

1 unit

£18.80 inc VAT

£15.67 ex VAT

2+ units

£18.20 inc VAT

£15.17 ex VAT

5+ units

£17.84 inc VAT

£14.87 ex VAT

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Image of the 10 Year Longlife Battery Combination Carbon Monoxide and Smoke Alarm - Kidde WFPCO

10 Year Longlife Battery Combination Carbon Monoxide and Smoke Alarm - Kidde WFPCO

  • FREE delivery
  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the lifetime of your alarm - GUARANTEED
  • Warranty: 10 year warranty
  • Detects both carbon monoxide and smoke hazards
  • Certified to EN 14604: 2005
  • Certified to EN 50291-1: 2010 (domestic use)
  • Suitable for ceiling installation
4 Customer Reviews

1 unit

£23.70 inc VAT

£19.75 ex VAT

2+ units

£23.46 inc VAT

£19.55 ex VAT

5+ units

£23.10 inc VAT

£19.25 ex VAT

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Image of the Kidde 5CO Carbon Monoxide Detector & 29HD Optical Smoke Alarm Special Offer

Kidde 5CO Carbon Monoxide Detector & 29HD Optical Smoke Alarm Special Offer

  • FREE delivery
  • Battery powered carbon monoxide detector
  • Kitemarked to BS EN 50291-1: 2010 (domestic use)
  • Battery powered optical smoke alarm
  • Certified to BS EN 14604: 2005
22 Customer Reviews

Save 6%

Now: £18.59 inc VAT

£15.49 ex VAT

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Image of the Kidde 10LLCO Carbon Monoxide Detector & 10Y29 Optical Smoke Alarm Special Offer

Kidde 10LLCO Carbon Monoxide Detector & 10Y29 Optical Smoke Alarm Special Offer

  • FREE delivery
  • 10 year battery powered carbon monoxide detector
  • Kitemarked to BS EN EN 50291-1: 2010 (domestic use)
  • 10 year battery powered optical smoke alarm
  • Certified to BS EN 14604: 2005
5 Customer Reviews

Save 5%

Now: £26.99 inc VAT

£22.49 ex VAT

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Image of the Carbon Monoxide and Smoke Combination Alarm - First Alert SCO5UK

Carbon Monoxide and Smoke Combination Alarm - First Alert SCO5UK

  • Product Lifespan: 7 years
  • Battery: 2 x AA alkaline battery (included)
  • Warranty: 7 year warranty
  • Test and hush button feature
  • Combined optical smoke and CO alarm
  • Certified to BS EN 14604:2005 (smoke)
  • Certified to BS EN 50291-1:2010 (carbon monoxide)
  • Suitable for ceiling installation
17 Customer Reviews

1 unit

£20.39 inc VAT

£16.99 ex VAT

2+ units

£20.03 inc VAT

£16.69 ex VAT

5+ units

£19.55 inc VAT

£16.29 ex VAT

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Image of the 7 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9B

7 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9B

  • Product Life: 7 years
  • Battery: AA batteries included
  • Warranty: 7 year warranty
  • Suitable for free standing or wall mounting
  • Ideal for domestic use and camping / caravans / boats
  • Kitemarked to BS EN50291-1
  • Kitemarked to BS EN50291-2
280 Customer Reviews

1 unit

£13.19 inc VAT

£10.99 ex VAT

2+ units

£12.95 inc VAT

£10.79 ex VAT

5+ units

£12.83 inc VAT

£10.69 ex VAT

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Image of the 7 Year Life Digital Display Carbon Monoxide Alarm - FireAngel CO-9D

7 Year Life Digital Display Carbon Monoxide Alarm - FireAngel CO-9D

  • Product Lifespan: 7 years
  • Battery: Sealed lithium battery
  • Warranty: 7 year warranty
  • Clear digital display
  • Free standing or wall mounting
  • Suitable for domestic use and camping / caravans / travel
  • Kitemarked to BS EN 50291-1 and BS EN 50291-2
275 Customer Reviews

1 unit

£17.15 inc VAT

£14.29 ex VAT

2+ units

£16.91 inc VAT

£14.09 ex VAT

5+ units

£16.79 inc VAT

£13.99 ex VAT

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Image of the 7 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9X

7 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9X

  • Product Lifespan: 7 years
  • Battery: Longlife lithium battery
  • Warranty: 7 year warranty
  • LED status indicators
  • Suitable for free standing or wall mounting
  • Kitemarked to BS EN50291-1 (domestic use)
  • Kitemarked to BS EN50291-2 (camping / caravans / boats)
77 Customer Reviews

1 unit

£15.59 inc VAT

£12.99 ex VAT

2+ units

£15.35 inc VAT

£12.79 ex VAT

5+ units

£15.23 inc VAT

£12.69 ex VAT

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Image of the 10 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9X-10

10 Year Life LED Carbon Monoxide Alarm - FireAngel CO-9X-10

  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the life time of your product – GUARANTEED
  • Warranty: 10 year warranty
  • LED status indicators
  • Suitable for free standing or wall mounting
  • Kitemarked to BS EN50291-1 (domestic use)
  • Kitemarked to BS EN50291-2 (camping / caravans)
157 Customer Reviews

1 unit

£21.70 inc VAT

£18.08 ex VAT

2+ units

£21.10 inc VAT

£17.58 ex VAT

5+ units

£20.86 inc VAT

£17.38 ex VAT

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Image of the 7 Year Life LED Carbon Monoxide Alarm - Honeywell XC70

7 Year Life LED Carbon Monoxide Alarm - Honeywell XC70

  • Product Lifespan: 7 years
  • Battery: Built-in, lasts the life time of your product – GUARANTEED
  • Warranty: 7 year warranty
  • LED status indicators
  • Suitable for free standing or wall mounting
  • Reduced sound level test feature
  • Kitemarked to BS EN50291-1 (domestic use)
  • Kitemarked to BS EN50291-2 (camping / caravans / boats)
49 Customer Reviews

Save 21%

Now: £22.79 inc VAT

£18.99 ex VAT

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Image of the 10 Year Longlife Battery Combination Optical Smoke and CO Alarm - FireAngel SCB10-R

10 Year Longlife Battery Combination Optical Smoke and CO Alarm - FireAngel SCB10-R

  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the life time of your product - GUARANTEED
  • Warranty: 5 Year Warranty
  • Combined optical smoke and carbon monoxide detector
  • Ideal for hallways, bedrooms and living areas
  • Sleep Easy™ function
  • Kitemarked to EN 14604:2005 (smoke detection)
  • Kitemarked to EN 50291-1 (carbon monoxide detection)
  • Suitable for ceiling installation
2 Customer Reviews

1 unit

£32.22 inc VAT

£26.85 ex VAT

2+ units

£31.98 inc VAT

£26.65 ex VAT

5+ units

£31.86 inc VAT

£26.55 ex VAT

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Image of the FireAngel ST-622 Optical Smoke Alarm & CO-9X-10 Carbon Monoxide Alarm

FireAngel ST-622 Optical Smoke Alarm & CO-9X-10 Carbon Monoxide Alarm

  • FREE delivery
  • Battery: Built-in, lasts the lifetime of your alarms - GUARANTEED
  • Warranty: Smoke alarm (5 years) and CO alarm (10 years)
  • Easy to use Test/Hush buttons
  • CE marked
  • Smoke alarm: Kitemarked to BS EN 14604: 2005
  • CO alarm: Kitemarked to BS EN50291-1 and -2
84 Customer Reviews

1 unit

£31.54 inc VAT

£26.28 ex VAT

2+ units

£30.34 inc VAT

£25.28 ex VAT

5+ units

£29.74 inc VAT

£24.78 ex VAT

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Image of the 10 Year Life Carbon Monoxide Alarm with Long Life Lithium Battery - Ei208

10 Year Life Carbon Monoxide Alarm with Long Life Lithium Battery - Ei208

  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the life time of your product – GUARANTEED
  • Warranty: 5 year warranty
  • Low noise test button
  • Combined Test/Hush button
  • Kitemarked to BS EN50291-1 (domestic use)
  • Kitemarked to BS EN50291-2 (camping / caravans / travel)
12 Customer Reviews

£26.48 inc VAT

£22.07 ex VAT

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Image of the 10 Year Longlife Battery Radio-Interlinked Carbon Monoxide Alarm - FireAngel Pro Connected FP1820W2-R

10 Year Longlife Battery Radio-Interlinked Carbon Monoxide Alarm - FireAngel Pro Connected FP1820W2-R

  • Product Lifespan: 10 years
  • Battery: Built-in, lasts the lifetime of your alarm – GUARANTEED
  • Warranty: 5 year warranty
  • Can interlink with any Wi-Safe 2 compatible device
  • Suitable for free standing or wall mounting
  • Kitemarked to BS EN 50291-1 (domestic use)
  • Kitemarked to BS EN 50291-2 (camping / caravans / boats)

£47.99 inc VAT

£39.99 ex VAT

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Symptoms of Carbon Monoxide poisoning

Symptoms of Carbon Monoxide poisoning

The symptoms of CO poisoning are similar to those of a viral infection, such as headache, nausea, dizziness, sore throat and dry cough.
The seriousness of the poisoning depends from the concentration of CO in the air and the duration of exposure.

At 50ppm (parts per million), an exposure for longer than 30 minutes will start to affect your health.

At 200ppm you will get a slight headache after 2-3 hours.

At 400ppm strong frontal headache, becoming widespread after 3 hours.

At 800ppm Dizziness, nausea, convulsions, insensible after 2 hours.
What is Carbon Monoxide?

What is Carbon Monoxide?

Carbon Monoxide is created as a by-product of incomplete combustion of fuels containing carbon such as wood, gas, oil, etc. It occurs, if boiler flues are getting blocked, chimneys close up or if gas flames are not correctly adjusted. As Carbon Monoxide (also called short CO) cannot be smelled or tasted the increase in CO concentration goes unnoticed. However, even slight increases of CO have serious health implications. You therefore need Carbon Monoxide detectors to find out if you have CO in your building. If your detector goes off, switch off all fuel burning appliance, open all windows and leave the building. You then need to call your gasboard.

How do Carbon Monoxide Detectors display the presence of CO?

How do Carbon Monoxide Detectors display the presence of CO?

There are largely two alternative ways for a carbon monoxide alarm (CO alarm) to display the presence of dangerous levels of carbon monoxide:


LED warning lights together with an alarm siren

Digital display of actual CO concentration readings and an audible alarm when dangerous levels are reached.


CO detectors with LED display will only trigger an alarm at over 50ppm (number of CO molecules per million air molecules), a level that ignores the damaging impact of long term lower concentration exposure, believed to be somewhere around 20ppm. This limitation is unfortunately cast in iron by a British Standard.

CO detectors with digital display, while still only audibly alarming at over 50ppm, will at least display the actual CO concentration, even at very low concentrations such as 10ppm. Some of them, for example the CO9D detector, will even allow you to read the maximum concentration of CO the detectors has measured since the last query by pressing a button.

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