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Battery Operated Carbon Monoxide Detectors

Our battery powered Carbon Monoxide detectors (CO alarms) 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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Image of the Safelincs Home Fire Safety Kit with Radio Interlink

Safelincs Home Fire Safety Kit with Radio Interlink

  • Includes wireless radio-interlinked smoke and heat alarms
  • Wet chemical extinguisher suitable for cooking oil fires
  • St John Ambulance first aid kit provides the essentials for minor injuries
  • Ideal for two storey houses
  • SAVE OVER £30.00 ON WHEN BOUGHT AS A BUNDLE
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Now: £155.99 inc VAT

£129.99 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 the 2022 Scottish legislation
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£85.79 inc VAT

£71.49 ex VAT

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

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 the 2022 Scottish legislation
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£46.79 inc VAT

£38.99 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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