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

4.8 out of 5 stars
1 unit 2+ units 5+ units

£15.83 inc VAT

£13.19 ex VAT

£15.26 inc VAT

£12.72 ex VAT

£14.66 inc VAT

£12.22 ex VAT

Product Overview

The Kidde K5DCO is a 10 year digital display carbon monoxide alarm which will alert you to dangerous levels of carbon monoxide gas in your home. Powered by two replaceable alkaline batteries, the K5DCO features a digital display screen to show the current CO level, and a button which allows peak level recordings to be displayed. This alarm boasts a 7 year warranty, and can be wall mounted or free standing. The K5DCO replaces its predecessor (5DCO) and can be fitted to existing 5DCO and 5CO baseplates.

  • For rooms where an open fire or gas appliance is present
  • Product Life: 10 years
  • Battery: 2 x Duracell AA batteries included
  • Warranty: 7 year warranty
  • Suitable for wall mounting or free-standing installations (plate and fixings supplied)
  • Clear LED indicators: Green - Power, Amber - Fault, Red - Alarm
  • Combined Test / Reset button for regular testing of the alarm function
  • Loud 85dB sounder activates when CO is detected (alarms from 50ppm)
  • Digital screen shows current level of CO (from 30ppm) with dedicated button to display peak levels
  • Audible and visual warning for low battery and end of life
  • Ideal replacement for original Kidde 5DCO or 5CO alarms reaching end of life
  • Kitemarked to BS EN 50291-1: 2018 (for domestic use) with CE and UKCA approval
  • Dimensions (HxWxD): 73 x 127 x 39mm
  • This alarm is also suitable for the updated 2022 Welsh legislation

Please note: the packaging may state "excludes batteries" but this is regarding the warranty period; the K5DCO is supplied with the recommended batteries.

Technical Data
Product Code KEK5DCO
Alternative Product Codes K5DCO, 5DCO, NHDCO, 5DCOC, 900-0230
Brand Kidde
Battery Type

2 x AA Batteries (Duracell included)

Dimensions (HxWxD)

73 x 127 x 39mm


Digital Display and 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



7 Years

Weight 0.17kg
Product Datasheets
FAQs (3)
Q. Where should I install my carbon monoxide alarms?

CO detectors should be installed near potential sources of carbon monoxide, essentially any fuel-burning appliances such as boilers, cookers and ovens, fireplaces (both open and enclosed burners), and portable generators. 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 alarms 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.

Also note that carbon monoxide has been proven to spread into neighbouring properties through open windows and, in semi-detached or terrace houses, through loft spaces. If your property has an attached garage with a connecting door through to the house, it is recommended to fit a CO alarm inside the house leading from that doorway.

Battery powered carbon monoxide alarms can typically be installed wall-mounted or left free-standing on flat, level surface.

  • Near an appliance: they should be placed within 1 to 3 metres horizontally from the appliance and between the height of the appliance to 150mm below the ceiling – i.e., not above a stove where it would be in the path of steam or fumes.
  • In living spaces: they should be positioned close to where the occupant's head is likely to be most of the time – e.g., on your bedside table.

Combined smoke & CO alarms or mains-powered CO alarms are typically installed on the ceiling and should be at least 30cm away from any wall, light fitting, or other obstruction.

Do not install CO alarms within 3 metres of doors or windows, above radiators, or immediately close to anything that gives off steam or fumes like a cooker or shower room. Similarly, it is not recommended to install detectors in dusty areas such as workshops or garages.

For more information, please check the manufacturer's instructions – you can download the PDF manual from the relevant product page on our site. You can also watch our video guide to positioning CO detectors.

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 are carbon monoxide alarms required?

Most legislation advises at least one carbon monoxide alarm is fitted near new or replacement fuel-burning appliances that are fixed installations, though rented properties (both social and private sector) often require CO alarms be provided by landlords even if no appliances are being installed or replaced. Examples include boilers, coal fires, wood burners, and gas ovens and cookers, though an exception is often made in legislation for gas appliances solely used for cooking.

However, any and all materials can give off CO when burning, including gas cookers. Carbon monoxide can also spread from neighbouring properties or outside sources such as vehicle fumes. Because of this, Safelincs strongly recommends the installation of carbon monoxide detectors in every home, and also at head-height in bedrooms to protect occupants while sleeping.

Landlords, please see our pages for English, Welsh, and Scottish alarms or our landlord guidance page for more information.

Key Product Features

See the peak CO level recorded 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 KEK5DCO is supplied with the following components.

  • 1 x Kidde K5DCO 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: KEK5DCO Stock Level:
More than 20 in stock Expected dispatch: Today
1 unit

£15.83 inc VAT

£13.19 ex VAT

2+ units

£15.26 inc VAT

£12.72 ex VAT

5+ units

£14.66 inc VAT

£12.22 ex VAT

Delivery Options

The following delivery options are available on this product.

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 2-3 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered the next working day with Evri

For dispatch today order within

Excellent Warranty

This product is supplied with a 7 year manufacturers warranty as standard

Customer Reviews

20 customers have given this product an overall rating of 4.8 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by: W S

Good device Bought to replace one which had expired.

Published on: 2nd June 2024

Rating: 5 / 5 Stars

Reviewed by: A K

Exactly what I needed, good price and promptly delivered I%u2019ve used SafeLincs on a number of occasions and always found their website to be very useful with an excellent range of safety related products. Prices are always very competitive and delivery is both prompt and efficient. I will use again.

Published on: 18th May 2024

Rating: 4 / 5 Stars

Reviewed by: P C

Seems to work as it should

Published on: 5th March 2024

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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


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