10 Year Life Carbon Monoxide Alarm - Kidde K5CO
The Kidde K5CO carbon monoxide alarm will protect you and your family from dangerous carbon monoxide gas, and features a 10 year sensor life. Supplied with 2 x Duracell AA alkaline batteries to power the unit, the K5CO carbon monoxide detector continuously monitors the CO levels detected within a room. These units can be wall mounted or free standing, and feature a 7 year manufacturer's warranty. The K5CO replaces its predecessor (5CO) and can be fitted to existing 5CO baseplates.
- Required in homes with an open fire or gas appliances
- Product Life: 10 years
- Battery: 2 x replaceable Duracell 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 if CO is detected
- 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
Please note: the packaging may state "excludes batteries" but this is regarding the warranty period; the 5CO is supplied with the recommended batteries.
Key Product Features
LED indicators show power and alarm status
Loud 85dB alarm alerts occupants to the presence of deadly gas
2 x AA alkaline batteries power the alarm for at least 1 year
Includes screws and plugs suitable for wall mounting
What's Included?
The KE5CO CO alarm 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
Customer Reviews (242)
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.
Reviewed by
D R
Published on
24th April 2026
Reviewed by
R M
Published on
18th January 2026
Excellent service fast delivery
Reviewed by
P V
Published on
15th October 2025
Does what it sayds on the pack.
Reviewed by
I C
Published on
11th August 2025
All good no issues :)
Reviewed by
A N
Published on
20th July 2025
Battery included, easy to install and working as it should do.
Technical Data
| Product Code | KEK5CO |
|---|---|
| Brand | Kidde |
| Battery Chemistry | Alkaline |
| Battery Type | AA Batteries |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Compliance | BS EN 50291-1 (Domestic) |
| CO Alarm Level (parts per million) | From 50ppm |
| Colour | White |
| Connection | Standalone |
| Display | LED Indicators |
| Environmental Suitability | Home |
| Fixing Options | Freestanding |
| Wall Mounted (Fixings Included) | |
| Installation Position | Mount At Head Height |
| Lifespan | 10 Years |
| Local Legislation | Welsh Legislation (2022) |
| Operating Temperature | -10°C To +40°C |
| Power Type | Battery Powered |
| Material | Plastic |
| Recyclable | Yes - Valpak's WEEE Distributor Take-back Scheme |
| Relative Humidity | Up To 90% |
| Sensitivity | 50ppm (Parts Per Million) |
| Sensor Type | Electro-chemical |
| Sound Level | 85dB |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 7 Years |
| Dimensions (Unit) |
|
| Weight | 164g |
| Datasheets |
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Simple to fix and easy to use.