The Kidde K10LLDCO 10 year digital display carbon monoxide alarm is powered a sealed longlife (lithium) battery that will power the alarm for its full 10 year lifespan; coupled with a 10 year manufacturer's warranty for peace of mind. When dangerous levels of carbon monoxide gas have been detected, the K10LLDCO will sound a loud 85dB warning alarm. The digital display shows current CO levels (from 30ppm) and peak CO levels (from 11ppm) when the peak level button is pressed. The K10LLDCO can be left free standing, or wall mounted, and is compatible with the original 10LLCO and 10LLDCO baseplate (if replacing an older model).
Combined Test & Reset button, plus Peak Level feature
LED indicators show power and alarm status
Loud 85dB alarm alerts occupants to the presence of deadly gas
Includes screws and plugs suitable for wall mounting
The KE10LLDCO CO alarm is supplied with the following components.
All of our product reviews are written by real customers that have purchased this product from us and are published without modification.
J P
5th May 2026
C G
23rd January 2026
Clear instructions, easy to fit, digital display very reassuring.
S M
6th December 2025
Speedy delivery. Easy set up.
Y S
29th November 2025
Good quality
Looks well made and was a decent price. Hopefully its doing its job well.
E W
11th November 2025
Great product
| Product Code | KEK10LLDCO |
|---|---|
| Brand | Kidde |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Battery Type | Sealed Lithium |
| CO Alarm Level (parts per million) | From 50ppm |
| CO Detection Level (parts per million) | From 30ppm |
| Colour | White |
| Compliance | BS EN 50291-1 (Domestic) |
| Connection | Standalone |
| Display | Digital Display |
| LED Indicators | |
| Environmental Suitability | Home |
| Fixing Options | Freestanding |
| Wall Mounted (Fixings Included) | |
| Installation Position | Mount At Head Height |
| Lifespan | 10 Years |
| Local Legislation | Northern Ireland Legislation (2024) |
| Scottish Legislation (2022) | |
| Welsh Legislation (2022) | |
| Material | Plastic |
| Operating Temperature | 0°C To +40°C |
| Power Type | Battery Powered |
| Recyclable | Yes - Valpak's WEEE Distributor Take-back Scheme |
| Relative Humidity | 0% To 90% |
| Sensitivity | 30ppm (Parts per Million) |
| Sensor Type | Electro-chemical |
| Sound Level | 85dB |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 10 Years |
| Dimensions (Unit) |
|
| Weight | 138g |
| Datasheets |
This littel alarm is good value and easy to fit. I've placed it fairly close to our gas boiler and the reading has been consistently zero. Hopefully that's good and gopefully it will never read anything else.