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

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Product Overview

The Kidde K10LLCO carbon monoxide alarm features a 10 year sealed lithium battery and is Kitemarked to the latest BS EN 50291-1: 2018, making it a perfect safety addition to your home. The clear LED indicators show when the alarm has been powered up, and allows you to easily identify whether the alarm has entered an alarm or fault state. The sleek and discreet design of this alarm also incorporates a combined test and hush button for easy testing and maintenance. In addition to the 10 year lifespan, this alarm boasts a 10 year warranty period for peace of mind.

  • Suitable for areas with a fuel burning appliance
  • Product Lifespan: 10 years
  • Battery: 10 year sealed lithium battery
  • Warranty: 10 year warranty
  • Slim, lightweight design suitable for free-standing or wall mounting
  • Clear LED indicators to show the alarm status
  • Test/Hush button with a loud 85dB sounder
  • 50 ppm (parts per million) of CO gas will activate the alarm
  • Clear end of life warning when the alarm needs replacing
  • Alarm memory feature - Red LED indicates a CO alert has occurred
  • Kitemarked to BS EN 50291-1: 2018 and UKCA approved
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes
Technical Data
Product Code KEK10LLCO
Alternative Product Codes K10LLCO, 10LLCO
Brand Kidde
Battery Type

10 Year Sealed Lithium

Dimensions (HxWxD)

72 x 119 x 39mm


LED Indicators

Operating Temperature

-10°C to +40°C

Relative Humidity

Up to 90% RH (non-condensing)


30ppm (parts per million) CO gas

Sound Output



10 Years

Weight 0.13kg
FAQs (4)
Q. What is the best way to dispose of an old smoke alarm or carbon monoxide detector?

Safelincs has signed up to Valpak's WEEE (Waste Electrical and Electronic Equipment) Distributor Take-Back Scheme*. This means if you are a Safelincs customer you can take old smoke, heat and CO alarms to your local recycling centre.

To find your nearest recycling centre, please visit Find out more about smoke alarm disposal.

*Registration ID: 7370

Q. What is carbon monoxide?

Carbon monoxide (chemical symbol: CO) is a colourless, odourless, tasteless and toxic gas created by the incomplete combustion of fossil fuels (gas, oil, coal and wood) used in our everyday appliances such as heaters, engines and boilers.

Protect yourself and your family by purchasing a CO detector and learning about the symptoms of carbon monoxide poisoning.

Q. What are the symptoms of carbon monoxide poisoning?

The symptoms of CO poisoning can range from mild flu-like symptoms such as headache, drowsiness, confusion, nausea and dizziness to more severe symptoms like breathing difficulties and irregular heartbeat. CO poisoning can ultimately lead to coma and death.

View more symptoms on our carbon monoxide information page.

Q. Where should I install carbon monoxide detectors?

CO detectors should be installed near boilers and other potential sources of carbon monoxide.

Place the detector 1 to 3 meters away from the boiler, etc. to avoid small start-up CO discharges to cause false alarms.

It is advisable to install detectors in areas of your home that you spend the most time in such as the living room and bedrooms. Larger homes may require several detectors to cover the property fully.

Please note: we recommend referring to the manufacturer installation guide that came with your detector for full instructions.

Delivery Options

The following delivery options are available on this product.

Free Economy Delivery

Free of Charge - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£8.10 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Excellent Warranty

This product is supplied with a 10 year manufacturers warranty as standard

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 01507 464182