Please note our offices and warehouses will be closed from 24th December until 2nd January 2025.
In-stock orders placed before 4:30pm on Friday 20th December should arrive before Christmas on a Next Working Day Delivery service. We are unable to guarantee this, however, as we rely on external couriers. Orders placed after this time will be processed and despatched as normal, but we cannot guarantee a pre-Christmas delivery. Any orders placed on Tuesday 24th December, or during the festive period, will be delivered in the first working days of the new year.
We recommend you place your order early, and look forward to serving you again in 2025.
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The Kidde K10LLDCO is a sleek, compact carbon monoxide alarm equipped with a non-replaceable, sealed-in lithium battery that lasts the full 10-year alarm life. It features a digital display for continuous CO level monitoring and a peak level display to record high CO levels. Advanced sensor technology provides consistent CO detection, while multi-function LEDs indicate power, fault, and alarm status. The alarm is easily wall-mountable or can be used freestanding, making it versatile for use in all living areas, as well as in boats and caravans. Approved to EN50291-1:2018 standards, the K10LLDCO offers reliable protection with a 10-year warranty
| Model | K10LLDCO |
| Power Supply | Sealed-in Lithium battery |
| Temperature Range | 0°C to 40°C |
| Humidity Range | Up to 90% relative humidity (RH) non-condensing |
| Storage and Transport | -20ºC to +60ºC and 5–95% relative humidity (RH) non-condensing |
| Alarm Dimensions | 116 x 72 x 40mm |
| Alarm Weight | 140g |
| Warranty | 10 years |
| Approvals | BSI certified to EN50291-1:2018 Standards |
| CE tested and certified | Yes |
Wondering which smoke alarm you need?
Our Smoke and Gas Detectors Buying Guide has a wealth of information to help you decide which Smoke Alarms to buy, plus installation tips, maintenance advice, and guidance on certification standards and relevant regulations to be aware of.
What type of battery does the Kidde K10LLDCO use, and is it replaceable?
The K10LLDCO uses a sealed-in lithium battery designed to last for the full 10-year life of the alarm, so there is no need for battery replacement during this period.
Can the Kidde K10LLDCO display the current level of carbon monoxide?
Yes, the K10LLDCO features a digital display that continuously shows the current carbon monoxide level, providing real-time updates on CO concentrations in your environment.
How does the Kidde K10LLDCO indicate a carbon monoxide event?
In addition to the digital display, the alarm has a memory feature where the red LED will flash every 60 seconds to indicate that a CO event has occurred, helping to track exposure even when you're not at home.
Is the Kidde K10LLDCO certified for safety and reliability?
The K10LLDCO is BSI certified to EN50291-1:2018 Standards and has also been tested and certified according to CE and UKCA standards, ensuring it meets high safety and reliability criteria.
