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10 Year Life Carbon Monoxide Alarm - Kidde K5CO

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1 unit 2+ units 5+ units

£15.23 inc VAT

£12.69 ex VAT

£14.63 inc VAT

£12.19 ex VAT

£14.27 inc VAT

£11.89 ex VAT

Product Overview

The Kidde K5CO carbon monoxide alarm is perfect for the home with a 10 year sensor life. Improving upon its predecessor – the Kidde 5CO – only 2 x AA alkaline batteries are now needed to power the new K5CO. Two Duracell batteries are included in the box alongside a wall mounting plate and fixings; surface top positioning is also suitable. This leading CO alarm has been updated to comply with the latest British Standards, being Kitemark approved for use in the home while carrying both CE and the new UKCA certification.

  • Ideal for homes with an open fire or gas appliances
  • FREE economy delivery
  • Product Life: 10 years
  • Battery: 2 x replaceable AA alkaline batteries (included)
  • Warranty: 7 year warranty
  • Free-standing or wall mounted (plate and fixings supplied)
  • Audible low battery warning "chirp"
  • Test/Reset button, and status LED indicators
  • Loud 85db piercing alarm function
  • Detector alarms from 50ppm
  • End of life warning signal as reminder of when to replace alarm
  • Dimensions (HxWxD): 73 x 127 x 39mm
  • Kitemarked to BS EN 50291-1:2018 (domestic use)
  • CE marked and UKCA marked
  • This alarm is also suitable for the updated 2022 Welsh legislation
Technical Data
Product Code KEK5CO
Alternative Product Codes 5CO, KE5CO, K5CO
Brand Kidde
Battery Type

2 x AA alkaline batteries (Duracell included)

Dimensions (HxWxD)

73 x 127 x 39mm


LED status indicators

Operating Temperature

-10°C to 40°C

Relative Humidity

Up to 90% (non-condensing)

Sound Output

85dB (A) at 3 metres

Storage Humidity

5% to 95% RH (non-condensing)

Storage Temperature

-20°C to 60°C


7 years

Weight 0.16kg
Product Datasheets
FAQs (5)
Q. Where should I install carbon monoxide detectors?

CO detectors should be installed near boilers and other potential sources of carbon monoxide. Keep a 1 to 3 meter distance to the boiler etc to avoid small start-up CO discharges to cause false alarms.
As you are likely to be most affected by CO in areas of your home that you spend the most time in it is advisable to install detectors in those areas as well, such as the living room and bedrooms.
It is also worth noting that while one detector is better than no detectors at all, larger homes may require several detectors to cover the property fully.

Which areas to avoid?

Do not install CO alarms above or below windows.

Although most kitchens contain fuel burning appliances it is not recommended to install your detector there. Kitchens can be quite steamy while you are cooking and this may affect the sensor in the CO detector. Similarly it is not recommended to install detectors in dusty areas such as workshops or garages.

For more information please watch our video guide

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. Can smoke alarms detect carbon monoxide gas?

Only combined smoke and CO alarms can detect both fire and carbon monoxide gas.

Q. Where should I position my carbon monoxide alarm?

In order to work effectively, CO detectors:

  • Should not be placed above or below windows
  • Should not be placed above radiators
  • Should be placed 1 to 3 metres away from solid fuel appliances

Please see our video on where to install a CO detector for information on how to fit your CO alarm to the wall.

Key Product Features

Easy weekly testing at the press of a single button

LED indicators for alarm (red), power (green), fault (amber)

Safety clips prevent installation without batteries

Backplate functions as wall mounting bracket for installation

What's Included?

Every Kidde KEK5CO is supplied with the following components.

  • 1 x Kidde K5CO carbon monoxide alarm
  • 2 x AA batteries
  • 1 x Screw fixing set (screws & rawl plugs)
  • 1 x Instruction manual

Pricing & Availability

Model Stock 1 unit 2+ units 5+ units
Product Code: KEK5CO Stock Level:
More than 20 in stock Expected dispatch: 31st May
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

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 with Evri by Hermes

Express Delivery

£8.10 inc VAT - Orders will be delivered in 1-2 working days with Evri by Hermes

Excellent Warranty

This product is supplied with a 7 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.

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