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 K5CO carbon monoxide alarm
- 2 x AA batteries
- 1 x Screw fixing set (screws & rawl plugs)
- 1 x Instruction manual
Customer Reviews (136)
Reviewer
R P
Published on
6th September 2026
Reviewer
M M
Does its job and easy to install
Published on
22nd August 2026
Reviewer
N H
Top quality item. Replacing those bought 10 years ago. Very reliable.
Published on
18th July 2026
Technical Data
| Product Code | KEK5CO |
|---|---|
| Alternative Product Codes | 5CO, K5CO |
| Brand | Kidde |
| Manufacturer's Part Number | K5CO |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Battery Chemistry | Alkaline |
| Battery Type | AA Batteries |
| CO Alarm Level (parts per million) | From 50ppm |
| Colour | White |
| Compliance | BS EN 50291-1 (Domestic) |
| 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) |
| Material | Plastic |
| Operating Temperature | -10°C To +40°C |
| Power Type | Battery Powered |
| 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 |
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Does what it says on the tin. Follow the enclosed instructions