Continuous monitoring of Carbon Monoxide (CO).

Sealed-in lithium batteries – will last the full 10-year alarm life without ever needing to be replaced

Suitable for the new Scottish Regulations introduced in 2022.

Green, amber and red LED’s indicate alarm status

Test and reset button to enable regular testing of alarm function.

End-of-life alarm alerts user to replace alarm after 10 years

Alarm Dimensions: 116mm x 72mm x 40mm. Weight: 140g

10 Year manufacturer's warranty.

Certified to EN50291-1:2018 Part 1

Compatible with previous generation 10LLCO baseplates

LIFETIME BATTERY: Equipped with a built-in 10 year sealed lithium battery which never needs replacing; Designed to last the full 10 year lifetime of your alarm

10 YEAR WARRANTY: Backed by a comprehensive 10 year manufacturer's warranty for complete peace of mind that your alarm will provide reliable ongoing protection

VISUAL LCD DISPLAY: Displays CO levels detected from 30ppm, and features a Peak Level button to show highest recorded levels of CO detected between 11 and 999ppm

LIGHTWEIGHT & VERSATILE: The compact slimline design of this essential safety device blends seamlessly into your home to provide essential protection for you and your family

LOUD & ACCURATE ALARM: From just 50ppm of CO in the air, the Kidde 10LLDCO will emit a loud 85db piercing alarm alerting occupants to the presence of carbon monoxide

SAFETY APPROVED: CE and UKCA marked, and Kitemarked to the most up-to-date British Standards Institute (BSI) standard for carbon monoxide alarms (BS EN 50291-1:2018)

Reliability & Precision: Certified by UKCA and compliant with EN 50291, this CO alarm precisely measures carbon monoxide levels. When a hazard is detected, it immediately triggers a loud 85 dB alarm to alert your family.

10-Year Sealed Lithium Battery: Equipped with a maintenance-free battery that delivers 10 years of continuous power, eliminating frequent replacements. Can be temporarily turned off to conserve battery life when not in use.

Real-Time LCD Display: The large backlit LCD screen continuously shows real-time CO levels—even when they are at zero. Its clear visibility in both daylight and low light ensures 24/7 monitoring at a glance.

Intuitive LED Indicators: Three LED indicators provide clear status updates: green flashes every 60 seconds for normal operation, red signals an alarm, and yellow indicates a malfunction—so you always know the detector’s condition.

Flexible Installation: Designed for both wall mounting and free-standing use. Perfect for your home, RV, or while traveling, this compact CO alarm offers reliable protection wherever you go.

【Accurate CO Detection】The alarm has a 10-year high-performance electrochemical sensor to deliver accurate detection of carbon monoxide leakage and respond quickly. TUV certificated conforms to EU EN50291 standard.

【3 in 1 Detector】The screen displays temperature and humidity in standby mode, together with the CO concentration when CO reaches the alarm value.

【User-friendly LCD Screen】The CO alarm features a blue backlight function, making it user-friendly to read information under any lighting condition.

【10-Year life Battery】Comes with a sealed non-replaceable battery which can run for 10 years.Long standby time, low power consumption.

【85 dB Sound with Indicators】Clear status indications:The measurement is also equipped with three indicator lights to clearly display the device status, red with alarm, yellow with fault, green with standby.

【2 Way Installation】Easy to instal,wall mount or free standing by your option. With the adhesive sticker, you can install it without griling holes.

【Suitable for Caravans】This CO alarm has been tested and conforms to EU EN50291-2, which is suitable to use in RV.

Accurate Relialbel CO Detector: Comply with EN 50291 standard, CE Certified Carbon Monoxide alarm, equipped with high accuracy and reliable electrochemical sensor, continuously measure CO concentration in ambient air.

Loud Alarm Warning: Carbon Monoxide can't be found with human natural senses. You can see real-time CO levels on LCD display. When a dangerous level of carbon monoxide is detected, the red LED will flash and the 85dB audible alarm will alert your families.

10 Year Battery Operated: The CO Alarm is equipped with 1600mAh Lithium battery (Sealed In). No wiring and sockets required. It can be placed anywhere you want.

Easy Intsalltion: The CO alarm can stand freely on the desk, also can be wall mounted with double side tape without drill, or drill to install with screw kits. With the bracket, the CO detector also can be taken down even wall mounted.

Low Battery & End of Life Warning: If the battery is low , the CO alarm beeps once every 60 seconds, and the yellow LED indicator flashes once. If the CO detector reaches the end of service life,the carbon monoxide beeps twice every 30 seconds, and Yellow LED indicator flashes twice.

[Turn On the Unit] - Press and hold TEST button for 3s until red light on, then release it, Red-Green-Yellow lights up in sequence, and screen shows 000-999ppm in sequence then back to 0ppm, done

[10-Year Continuous Protection] - With 10 year built-in battery, our carbon monoxide alarm will give your family 24/7 continuous protection, no need to worry about changing battery frequently

[Reliable CO Alarm for Home] - LIORQUE carbon monoxide detector conforms to EN 50291 standard and equipped with high accuracy sensor, continuously measure CO concentration in the air

[3-color LED Indicator] - (Green/Yellow/Red), 3-color LED light telling you the alarm’s status at a glance: Red for alarm, Yellow for fault or low battery, and Green for working normally

[Loud Alarm+LCD Display] - This carbon monoxide alarm featuring 85dB loud alarm and red light flashing to alert you in time. Also, LCD screen will show you real-time CO concentration levels(0-999ppm), 50ppm: Alarm within 60-90 minutes; 100ppm: Alarm within 10-40 minutes; 300ppm: Alarm within 3 minutes

[Big TEST/HUSH Button] - TEST/HUSH button is used for testing the machine or stop the alarm. Test: press the button, you will hear sound continuously with red light flashing; Hush: press and hold it for 2-3s to stop the alarm; However, if CO concentration is higher than 150ppm, the alarm cannot be muted

[Easy Installation] - With complete mounting accessories, this carbon monoxide alarm can be flexible placed on walls/ceilings without wiring

[Low Battery Warning] - If battery is low or failure, the battery symbol will turn blank on the screen and an intermittent "chirp" with yellow light flash once every 50 seconds

【Accurate and Reliable】- This CO alarm is equipped with a 10-year sensor that can give a high and stable performance of accurate CO detection and ensures few false alarm.

【10-Year Battery Life】- The carbon monoxide detector comes with a replaceable battery of 10-year that will keep your home continous protection. No need for frequent battery changes.

【Effective Notification】- This CO detector is designed with three-colour LED indicators. The LED light flashed green, yellow, red to indicate power on, fault and alarm.

【Loud and Clear Alarm】- The CO detector features a high-volume buzzer with sound output of 85dB at 3 meters. So that you and your family would not miss any alert.

【Easy&Flexible Installation】- It can be easily mounted on the wall by attached self-adhesive sticker or screws. Also you can let it free-standing by your choice.

【Quality Assurance】- The carbon monoxide detector is tested and certificated by TUV laboratory and meets EN 50291 standard.

【Usage Scenario】- Carbon monoxide is a gas produced by insufficient combustion, so it is essential to install carbon monoxide detectors around barbecues, fireplaces, etc.

【Warning】- This product is not a natural gas detector, not a methane detector, it detects carbon monoxide and can only be used indoors.

Certified Accuracy & Loud Alert – Complies with EN 50291 and UKCA standards, this reliable carbon monoxide alarm accurately monitors CO levels in ambient air. When a danger is detected, it instantly triggers a powerful 85dB siren to warn you and your family, providing round-the-clock protection.

10-Year Maintenance-Free Battery – Built-in sealed lithium battery delivers 10 years of continuous power without replacements or wiring. Auto power-saving mode ensures energy efficiency when not in use, making it ideal for long-term home safety.

Clear Real-Time LCD Display – The high-contrast LCD screen provides a clear and constant view of CO levels, even when at zero. The built-in backlight guarantees visibility in dark conditions, enabling safe and easy checks at any time of day.

Intuitive LED Indicators – Equipped with three distinct LED lights for instant status updates: green for normal operation, red for danger, and yellow for fault. These intuitive indicators ensure you always know your carbon monoxide detector is working correctly.

Flexible Installation & Versatile Use – Can be wall-mounted or placed on any flat surface, perfect for bedrooms, kitchens, RVs, and even travel use. The compact, modern design blends seamlessly into any home environment without compromise.