10 Year Life Carbon Monoxide Alarm with Digital Display - Kidde K5DCO
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.
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)
2 x AA alkaline batteries power the alarm for at least 1 year
Safety clips prevent installation without batteries
What's Included
The KE5DCO 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 (200)
Reviewer
S C
Published on
3rd November 2026
Reviewer
M H
Good item, good price and fast post, great seller
Published on
23rd October 2026
Reviewer
N S
Bought this monitor specifically due to its digital display so the it’s clear if there is any CO released from my boiler. It arrived quickly and was well packaged, very satisfied.
Published on
11th October 2026
Technical Data
| Product Code | KEK5DCO |
|---|---|
| Alternative Product Codes | 5DCO, K5DCO |
| Brand | Kidde |
| Manufacturer's Part Number | K5DCOBB |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Battery Chemistry | Lithium |
| Battery Type | AA Batteries |
| 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 | 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 | 10% To 95% |
| Sensitivity | 30ppm (Parts per Million) |
| Sensor Type | Electro-chemical |
| Sound Level | 85dB |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 7 Years |
| Dimensions (Unit) |
|
| Weight | 168g |
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