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

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

£15.59 inc VAT

£12.99 ex VAT

£14.99 inc VAT

£12.49 ex VAT

£14.63 inc VAT

£12.19 ex VAT

Product Overview

The Kidde K5DCO is a 10 year digital display carbon monoxide alarm powered by two replaceable AA alkaline batteries. It features a digital display screen to show the current CO level and a button which allows peak level recordings to be displayed. Clear traffic light LEDs show the current status of the CO alarm; green for power, amber for fault, and red for alarm. This alarm boasts a 7 year warranty period for peace of mind and provides warning chirps and a digital readout to indicate battery replacement or end of life.

  • Perfect for use within the home
  • Product Life: 10 years
  • Battery: 2 x AA alkaline batteries (included)
  • Warranty: 7 year warranty
  • Suitable for wall mounting or free-standing installations
  • Clear LED indicators: Green - Power, Amber - Fault, Red - Alarm
  • Ideal replacement for original Kidde 5DCO alarms reaching end of life
  • Combined Test / Reset button for regular testing of the alarm function
  • Digital screen shows current level of CO with dedicated button to display peak levels
  • Audible and visual warning for low battery and end of life
  • Kitemarked to BS EN 50291-1 (domestic use)
  • CE and UKCA marked
  • 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 suitable 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 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.

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

£15.59 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

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

Customer Reviews

1 customer has given this product an overall rating of 4 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: 4 / 5 Stars

Reviewed by: P E

Bought to replace an out of date Kidde CO2 detector and the product is better with the digital display function Great service by Safelincs and my go to place for alarms

Published on: 21st June 2022

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