Top 9 Mains Carbon Monoxide Detector UK – Carbon Monoxide Detectors

As an Amazon Associate I earn from qualifying purchases.

1. Kidde

Hard Wired, Kidde 4MCO Carbon Monoxide Alarm, 230v, Mains Powered

Kidde - Option to have standard LED or digital display. Digital display provides early warning of intermittent and low CO levels and shows FIRE or CO when interconnected with other Kidde alarms. Provides end of life warning when the alarm has reached the end of it's life. Mains powered with 7 year sealed rechargeable lithium back-up battery. Led display indicates alarm state, power supply status and low battery.
Height5.59 cm (2.2 Inches)
Length15.01 cm (5.91 Inches)
Weight0.38 kg (0.84 Pounds)
Width14.61 cm (5.75 Inches)
Part Number423/9HIR

2. Google

Smoke Alarm And Carbon Monoxide Detector Wired, Google Nest Protect

Google - The split-spectrum Sensor looks for both fast-and slow-burning fires. You'll receive a message if the alarm goes off, if the batteries start to run low or if a sensor isn't working. The smoke alarm that others look up to. Nest protect only takes minutes to set up with your ioS or Android device.

And pathlight, not annoying. And you can silence your Nest Protect using the Nest app. You'll know, from anywhere. It can send an alert to your phone, speak to you and even light the way in the dark. It tells you what the danger is and where it is. It also has a 10 year co sensor so that it can tell you where poisonous, invisible CO is hiding. Nest protect is also simple to attach to the ceiling, thanks to a neatly designed back plate.

Nest protect can alert your phone when something is wrong at home. Easy to install. Once you've added each of your Nest Protects to your Nest account, they will automatically connect to each other. Nest protect is a smoke and carbon monoxide alarm with a split-spectrum smoke sensor to detect both fast -and slow-burning fires. Thoughtful, relaxing shower shouldn't cause your alarm to shout at you. Nest protect checks itself over 400 times a day and lets you know if something is wrong.
Height15.9 cm (6.26 Inches)
Length15.8 cm (6.22 Inches)
Weight0.76 kg (1.68 Pounds)
Width7 cm (2.76 Inches)
Part NumberS3003LWGB
Warranty2 years limited warranty.

3. Mercury

Mercury | Mains Powered Carbon Monoxide Alarm | Inter-connectable

Mercury - Electro-chemical sensor operates up to 10 years from first connection. Inter-connectable with up to 19 other alarms, positioned around your property. Supplied with fixing kit, 9V battery and user guide. Kitemark approved - km 6515725 en50291-1:2010+A1:2012. Battery backup and low battery indicator. Led status indicators.
Height6 cm (2.36 Inches)
Length17 cm (6.69 Inches)
Weight0.21 kg (0.46 Pounds)
Width12 cm (4.72 Inches)
Part Number350.138UK

4. meross

Visual Alarm, Dual-function Alarm with Silence Feature Audible Alarm, Meross Smoke and Carbon Monoxide Alarm Detector with 10 Year Battery

meross - Smoke alarms can be mounted in ceiling or wall in a central location outside each sleeping area, and in other locations where required by law. 2-in-1 function photoelectric smoke sensor and electrochemical CO sensor work independently, smoke alarm prior to CO alarm. High-tech this 2 in 1 smoke and carbon monoxide detector has a built-in intelligent chipset.

The maximum alarm sound reached 85 decibels. Alarm will automatically activate when attached to the mounting bracket. Led light is green in normal and turn red in emergency, fire alarms smoke detectors detect the safety of your house at anytime. Smoke monoxide detector detects fast and slow-burning fires with minimized false alarms, provides you the ultimate protection. Install easily smoke alarm battery-operated not hardwired can be installed in 5 minutes by yourself, on every level of the home, coming with screws and bracket.

10 years life this smoke carbon monoxide detector contains 1 built-in 3V CR17450 battery, and could keep for 10 year and cannot be removed, preventing unwanted tampering and ensuring your alarm is always on. Tips: press the test button every month to check whether the CO&Smoke alarm is working properly making life more at ease. The 2-in-1 smoke and carbon monoxide alarm detector has a 10-year product life and enjoys a 36-month warranty. En14604 & en50291 quality you can always trust meross.
Height4 cm (1.57 Inches)
Length13 cm (5.12 Inches)
Weight0.18 kg (0.41 Pounds)
Width13 cm (5.12 Inches)
Part NumberGS883-A


Conforms to EN 50291 Standard, ONLIVING 10-Year Life Carbon Monoxide Alarm with LED Display, Carbon Monoxide Detector Built in 360° Precision Sensors, Test Button, Replaceable Battery Operated

ONLIVING - Easy usage: test button contains test, allowing you to grasp the use of the carbon monoxide detector quickly and verify whether the horn and circuit are operating normally, and manual reset functions, mute, with you a pleasure experience on simple operation. Advanced precision sensor: onliving carbon monoxide detector combines advanced sensor technology and powerful MCU chip to form the latest CO electrochemical sensor, It can accurately and sensitively detect dangerous CO levels, and provide you with the earliest CO risk warning through a 85 dB loud alarm.

Led photosensitive screen: clearly displays the battery level and co levels taken from the surrounding air in PPM parts per million in real time. Led screen is more energy-efficient than lcd screens on the market, with a longer viewing distances, which means that you can see the screen index of the carbon monoxide alarm installed on the wall without lifting a stool.

When the battery is low and needs to be replaced, an alarm will warn you, and an end-of-life warning lets you know when it’s time to replace the unit. 3 led indicator: 3-color flashing led indicator clearly informs you of the alarm operating status green LED indicates normal operating status, red LED indicates alarm status and yellow LED indicates malfunction, ensuring safety of your home 24/7. 10 years uninterrupted protection: onliviing sensor has a service life of up to 10 years and can provide protection for your family 24/7.
Part NumberC11-L
WarrantyYour purchase comes with 30 days satisfaction guaranty, 1-year warranty and lifetime technical support. If you have any using problems with onliving carbon monoxide detector, our onliving customer team will definitely answer your questions in detail and provide satisfactory solutions for you.

6. X-Sense

Conforms to EN 50291 Standard, Replaceable Battery Operated CO Alarm Detector, X-Sense Carbon Monoxide Alarm Detector with Digital Display, CO03D

X-Sense - 10-year 24/7 protection: powered by 3 replaceable 1. 5 v aa batteries, even during power outages; a low battery alert informs you when the batteries need to be changed, this CO alarm provides the best 24/7 protection, and with a sensor life of 10 years, and an end-of-life warning lets you know when it’s time to replace the unit.

Large lcd display & high sensitivity: clearly displays the battery life and the real-time CO levels taken from the surrounding air, with the lowest alarm threshold at 30 PPM, with an updated measurement taken every 10 seconds; responds to various CO threshold levels, ensuring your ultimate CO protection. Accurate & responsive: featuring an advanced figaro electrochemical co sensor and a high-performance st chipset, an invisible, deadly gas, the X-SENSE Carbon Monoxide Alarm instantly and accurately detects concentration levels of CO, while minimizing false alarms; designed to give you the earliest possible warning of CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator the LED indicators won’t disturb your sleep while the alarm is in normal working status.

Flexible & easy installation: no need to worry about wires or wall outlets, as our battery-operated CO alarm is provided with screws and anchor plugs, so it installs quickly and easily anywhere you want. Quality assurance: comes with a 60-day money-back guarantee and 5-year warranty with a response time of 24 hours; approved by BSI and in conformity with EN 50291 standard.
Height3.7 cm (1.46 Inches)
Length11 cm (4.33 Inches)
Width11 cm (4.33 Inches)
Part NumberCO03D
Warranty60-day money-back guarantee, 5-year quality warranty, and lifetime technical support.

7. Firehawk

Firehawk CO7B-10Y Carbon Monoxide Alarm Detector with 10 Year Battery

Firehawk - Sealed 10 year Lithium battery. End of life indicator. Versatile mounting system. Led indicators. Compact & stylish design.
Part NumberNTDL_SML

8. Kidde

Kidde Carbon Monoxide Alarm

Kidde - Continuous monitoring. Warning! this co alarm is not a substitute for a smoke or fire alarm. End-of-life alarm. Test/reset button. Multi-function green and red LED's. Battery operation.
Height3 cm (1.18 Inches)
Length7 cm (2.76 Inches)
Weight0.2 kg (0.44 Pounds)
Width12 cm (4.72 Inches)
Part Number5CO
Warranty7 year warranty.


YZIF Carbon Monoxide Detector CO Alarm Detector with Digital Display and Sound Alarm For Home

YZIF - Light and sound alarm warning: when a dangerous level of carbon monoxide is detected the red LED will flash and the alarm pattern will sound 85-decibel alarm to protect your family's life and property safety from CO detector.

Power supply: dc3v 2aa size batteries. Not included sensor type:electrochemical Gas Detection Type:Carbon Monoxide Material: ABS. 50ppm, alert within 10 to 40 minutes; 300ppm, alert within 60 to 90 minutes; 100ppm, alert within 3 minutes. High quality co alarm, en 50291 certified carbon Monoxide detector equipped with high accuracy and reliable long-life electrochemical CO sensor to detect CO gas leak quickly. Alarm standard: the alert time depend the level of carbon monoxide concentration.
Height3.5 cm (1.38 Inches)
Length10 cm (3.94 Inches)
Width10 cm (3.94 Inches)
Part NumberYZIF-C20A