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Battery-powered carbon monoxide alarms

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Battery Operated 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. Our CO alarms 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).

Page 1 (20 of 26 Products)
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: 2018 (domestic use)
  • Also suitable for the 2022 Welsh legislation
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4.7 out of 5 stars
1 unit

£15.23 inc VAT

£12.69 ex VAT

2+ units

£14.63 inc VAT

£12.19 ex VAT

5+ units

£14.27 inc VAT

£11.89 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
  • Also suitable for the 2022 Welsh legislation
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4.8 out of 5 stars
1 unit

£15.83 inc VAT

£13.19 ex VAT

2+ units

£15.23 inc VAT

£12.69 ex VAT

5+ units

£14.87 inc VAT

£12.39 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
  • Also suitable for the 2022 Welsh legislation
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4.8 out of 5 stars
1 unit

£17.39 inc VAT

£14.49 ex VAT

2+ units

£16.79 inc VAT

£13.99 ex VAT

5+ units

£16.43 inc VAT

£13.69 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: 2018 (domestic use)
  • Also suitable for both the Welsh and Scottish 2022 legislation
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4.7 out of 5 stars
1 unit

£20.63 inc VAT

£17.19 ex VAT

2+ units

£20.03 inc VAT

£16.69 ex VAT

5+ units

£19.67 inc VAT

£16.39 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)
  • Also suitable for both the Welsh and Scottish 2022 legislation
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4.7 out of 5 stars
1 unit

£21.59 inc VAT

£17.99 ex VAT

2+ units

£20.99 inc VAT

£17.49 ex VAT

5+ units

£20.63 inc VAT

£17.19 ex VAT

View Product
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
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4.8 out of 5 stars
1 unit

£19.68 inc VAT

£16.40 ex VAT

2+ units

£18.84 inc VAT

£15.70 ex VAT

5+ units

£18.60 inc VAT

£15.50 ex VAT

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Image of the 10 Year Longlife Battery Wireless Carbon Monoxide Alarm – Hispec RF Pro Range

10 Year Longlife Battery Wireless Carbon Monoxide Alarm – Hispec RF Pro Range

  • Battery: 10 year sealed lithium battery
  • Warranty: 5 year warranty
  • Radio-interlink up to 20 Hispec RF Pro Alarms
  • CE marked and Kitemarked, suitable for Grade F1 installations
  • Compatible with the Hispec Control Unit and Hispec Smoke and Heat Alarms
  • Also suitable for both the Welsh and Scottish 2022 legislation
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4.8 out of 5 stars

£41.75 inc VAT

£34.79 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 CO detector
  • Kitemarked to BS EN 50291-1: 2010 (domestic use)
  • Battery powered optical smoke alarm
  • Certified to BS EN 14604: 2005
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4.7 out of 5 stars

Save 5%

Now: £22.78 inc VAT

£18.98 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 CO detector
  • Kitemarked to BS EN EN 50291-1: 2010 (domestic use)
  • 10 year battery powered optical smoke alarm
  • Certified to BS EN 14604: 2005
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4.9 out of 5 stars

Save 5%

Now: £26.99 inc VAT

£22.49 ex VAT

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Image of the 10 Year Longlife Battery LED Carbon Monoxide Alarm - Firehawk CO7B-10Y

10 Year Longlife Battery LED Carbon Monoxide Alarm - Firehawk CO7B-10Y

  • Product Life: 10 years
  • Battery: Longlife lithium battery
  • Warranty: 10 year warranty
  • Ideal for domestic use and camping, caravans, and boats
  • Kitemarked to BS EN 50291-1 and BS EN 50291-2
  • Also suitable for both the Welsh and Scottish 2022 legislation
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5 out of 5 stars

£21.95 inc VAT

£18.29 ex VAT

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Image of the 7 Year Sealed Longlife Battery Digital Carbon Monoxide Alarm - Firehawk CO7BD

7 Year Sealed Longlife Battery Digital Carbon Monoxide Alarm - Firehawk CO7BD

  • Detector battery: 7 year sealed lithium battery
  • Warranty: 7 year manufacturer's warranty
  • Suitable for homes, camping, caravans, and boats
  • Free standing or wall mounting
  • Kitemarked to BS EN50291-1 (domestic use)
  • Kitemarked to BS EN50291-2 (camping / caravans / boats)
  • Also suitable for both the Welsh and Scottish 2022 legislation
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Write a review

£23.99 inc VAT

£19.99 ex VAT

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Image of the 10 Year Longlife Sealed Battery Wireless Carbon Monoxide Alarm - Firehawk CO7B-10YW

10 Year Longlife Sealed Battery Wireless Carbon Monoxide Alarm - Firehawk CO7B-10YW

  • Detector Battery: 10 year sealed lithium battery
  • Wireless Base Battery: 7 year sealed lithium battery
  • Warranty: 7 year manufacturer's warranty
  • Wirelessly interlink up to 15 Firehawk W alarms
  • Also suitable for both the Welsh and Scottish 2022 legislation
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4.6 out of 5 stars

£46.79 inc VAT

£38.99 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
  • Warranty: 1 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)
  • Also suitable for both the Welsh and Scottish 2022 legislation
Show More
4.7 out of 5 stars

£49.19 inc VAT

£40.99 ex VAT

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Image of the LED Recessed Downlight with Carbon Monoxide Alarm - Lumi-Plugin

LED Recessed Downlight with Carbon Monoxide Alarm - Lumi-Plugin

This Lumi-Plugin downlight features a built-in carbon monoxide alarm and blends in seamlessly to provide protection and lighting for your home or property. A choice of warm or cool white lighting options is available.

  • Suitable for rooms or garages with fuel burning appliances
  • Available with warm or cool white LED options
  • Supplied with a carbon monoxide alarm to fit within the light
  • Also suitable for both the Welsh and Scottish 2022 legislation

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Write a review

£85.79 inc VAT

£71.49 ex VAT

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Image of the 10 Year Life Carbon Monoxide Alarm - Kidde K5CO

10 Year Life Carbon Monoxide Alarm - Kidde K5CO

  • FREE delivery
  • Product Life: 10 years
  • Battery: 2 x AA batteries included
  • Warranty: 7 years
  • LED indicators for alarm status
  • CE marked and UKCA marked
  • Kitemarked to BS EN 50291-1 for domestic use
  • Also suitable for the 2022 Welsh legislation
Show More
Write a review
1 unit

£15.23 inc VAT

£12.69 ex VAT

2+ units

£14.63 inc VAT

£12.19 ex VAT

5+ units

£14.27 inc VAT

£11.89 ex VAT

View Product
Image of the 10 Year Life Carbon Monoxide Alarm with Digital Display - Kidde K5DCO

10 Year Life Carbon Monoxide Alarm with Digital Display - Kidde K5DCO

  • FREE Delivery
  • Product Lifespan: 10 years
  • Battery: 2 x AA alkaline batteries (included)
  • Warranty: 7 year warranty
  • Digital display to show peak level
  • Kitemarked to BS EN 50291-1 (domestic use)
  • Also suitable for the 2022 Welsh legislation
Show More
Write a review
1 unit

£15.59 inc VAT

£12.99 ex VAT

2+ units

£14.99 inc VAT

£12.49 ex VAT

5+ units

£14.63 inc VAT

£12.19 ex VAT

View Product
Image of the Carbon Monoxide Alarm with Digital Display and 10 Year Warranty - Kidde K7DCO

Carbon Monoxide Alarm with Digital Display and 10 Year Warranty - Kidde K7DCO

  • FREE delivery
  • Product Life: 10 years
  • Battery: 2 x AA batteries included
  • Warranty: 10 years
  • Digital display from 10ppm CO
  • Peak Level Memory – highest CO level recall
  • Approved for use in homes, caravans and boats
  • CE and UKCA marked, and Kitemarked
  • Also suitable for the 2022 Welsh legislation
Show More
Write a review
1 unit

£17.39 inc VAT

£14.49 ex VAT

2+ units

£16.79 inc VAT

£13.99 ex VAT

5+ units

£16.43 inc VAT

£13.69 ex VAT

View Product
Image of the 10 Year Sealed Longlife Battery Operated Carbon Monoxide Alarm - Kidde K10LLCO

10 Year Sealed Longlife Battery Operated Carbon Monoxide Alarm - Kidde K10LLCO

  • FREE Delivery
  • Product Lifespan: 10 years
  • Battery: Sealed-in Lithium Battery
  • Warranty: 10 year warranty
  • Coloured LEDs to indicate alarm, operation and fault
  • Kitemarked to BS EN 50291-1: 2018
  • Also suitable for both the Welsh and Scottish 2022 legislation
Show More
Write a review
1 unit

£20.63 inc VAT

£17.19 ex VAT

2+ units

£20.03 inc VAT

£16.69 ex VAT

5+ units

£19.67 inc VAT

£16.39 ex VAT

View Product
Image of the 10 Year Longlife Battery Carbon Monoxide Alarm with Digital Display - Kidde K10LLDCO

10 Year Longlife Battery Carbon Monoxide Alarm with Digital Display - Kidde K10LLDCO

  • FREE delivery
  • Product Lifespan: 10 years
  • Battery: Sealed-in lithium battery
  • Warranty: 10 year warranty
  • Digital display of CO levels from 11ppm
  • Kitemarked to BS EN 50291-1: 2018 for home use
  • Also suitable for both the Welsh and Scottish 2022 legislation
Show More
4.5 out of 5 stars
1 unit

£21.59 inc VAT

£17.99 ex VAT

2+ units

£20.99 inc VAT

£17.49 ex VAT

5+ units

£20.63 inc VAT

£17.19 ex VAT

View Product
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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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