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You are here: Home / DIY / Safety and Security / Fire Safety / Carbon Monoxide Alarms

Carbon Monoxide Alarms

Fire safety accessories come in various types however the most important one would appear to be a decent carbon monoxide alarm as all other steps would follow after fire has been successfully and immediately detected. Below are some of the popular carbon monoxide alarms that you could go for to enhance the safety of your premises.

On SaleChoice No. 1
Kidde Carbon Monoxide Alarm
20,029 Reviews
Kidde Carbon Monoxide Alarm
  • Continuous monitoring
  • End-of-life alarm
  • Test/reset button
  • Battery operation
  • Multi-function green and red LED's
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On SaleChoice No. 2
Fireangel CO-9D Digital Sealed for Life Carbon Monoxide Alarm, White
9,683 Reviews
Fireangel CO-9D Digital Sealed for Life Carbon Monoxide Alarm, White
  • Automatic self diagnostic check
  • 7 years sealed for life lithium battery
  • Loud 85 dB alarm at 1 m
  • Large test and silence button
  • Large multi-function digital screen and room thermometer
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Choice No. 3
Kidde 5CO Ten Year Life LED Carbon Monoxide Detector
4,577 Reviews
Kidde 5CO Ten Year Life LED Carbon Monoxide Detector
  • Replaces older Life Saver model
  • Continuous monitoring for CO with a loud alarm on detection
  • Can be wall mounted or free standing - ideal for taking on holiday or when travelling
  • Battery operated (3 replaceable AA batteries supplied)
  • 7 year warranty, 10 year alarm life, Kitemarked and CE Marked
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Choice No. 4
Kidde 5DCO 10 Year Life Digital Display Carbon Monoxide Alarm (1)
3,668 Reviews
Kidde 5DCO 10 Year Life Digital Display Carbon Monoxide Alarm (1)
  • Compact, slimline case. Dimensions = 118mm x 70mm x 40mm. Weight = 160g.
  • 10 year sensor lifespan. Powered by three replaceable AA batteries (supplied). Please note that due to the replaceable batteries used in this alarm it is NOT a type that is permitted for use in Scottish homes from February 2021.
  • Warning "chirp" and digital display message indicates when batteries are low.
  • Digital display of CO levels from 30ppm. Detector alarms from 50ppm.
  • Kitemarked to BS EN 50291-1:2010 and CE marked, 7 year warranty.
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On SaleChoice No. 5
Fireangel CO-9X Carbon Monoxide Alarm
3,081 Reviews
Fireangel CO-9X Carbon Monoxide Alarm
  • Automatic self diagnostic check, 7 years sealed for life lithium battery, loud 85 dB alarm at 1 metre, large test and silence button, visual LEDs for power, alarm and fault
  • 7 years sealed for life lithium battery
  • Loud 85 dB alarm at 1 m
  • Large test and silence button
  • Visual LEDs for power, alarm and fault
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Choice No. 6
FireAngel TCO-9BQ Carbon Monoxide 7 Year Life LED display CO-9B CO Alarm pack 2
256 Reviews
FireAngel TCO-9BQ Carbon Monoxide 7 Year Life LED display CO-9B CO Alarm pack 2
  • Advanced electrochemical sensor designed to accurately measure low levels of CO
  • Led status indicators for power and alarm mode
  • Co sensitivity level: 50Ppm
  • Easy to install. Portable so can be taken on holiday or installed within the home
  • Certified to BS EN50291-1: 2010+A1: 2012 & BS en50291-2: 2010
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Choice No. 7
X-Sense 10-Year Battery Combination Smoke & Carbon Monoxide Alarm Detector with LCD Display, SC07
1,037 Reviews
X-Sense 10-Year Battery Combination Smoke & Carbon Monoxide Alarm Detector with LCD Display, SC07
  • 2-IN-1 PROTECTION: Equipped with both photoelectric and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • BUILT-IN 10-YEAR BATTERY: Provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries or wonder if your alarm is still functioning
  • ACCURATE, RELIABLE & HIGHLY SENSITIVE: The X-Sense combination smoke and co alarm has been redesigned from the inside out; it will ensure that smoke triggers the alarm instead of interference by taking 3 separate smoke samples from the surrounding air; a full 360 ° ring of air intakes ensures complete detection with no blind spots
  • LED INDICATOR: Clearly informs you of the working status of the alarm with its 3-color flashing LED indicator (green LED indicates normal operation, red LED indicates the alarm status, and yellow LED indicates a fault), ensuring the safety and security of your home 24/7
  • LARGE LCD DISPLAY: Clearly displays battery level and the real-time CO levels in PPM (parts per million) taken from the surrounding air, with an updated measurement taken every 10 seconds
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On SaleChoice No. 8
Kidde 7COC KID7COC Carbon Monoxide Alarm, White
2,848 Reviews
Kidde 7COC KID7COC Carbon Monoxide Alarm, White
  • Power supply of 3 x AA batteries; continual monitoring
  • Multi-feature green and red LEDs
  • 10 years sensor life and warrenty
  • End-of-life warning
  • Test/Reset button
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Choice No. 9
Kidde 10SCO Combination 10 Year Life Carbon Monoxide and Smoke Alarm (1)
1,487 Reviews
Kidde 10SCO Combination 10 Year Life Carbon Monoxide and Smoke Alarm (1)
  • Two alarms in one unit for space saving and convenience.
  • Different voice warnings for smoke and CO with loud 85dB alarm noise.
  • Kitemarked and CE marked. 10 year sensor life and manufacturer’s warranty.
  • 9v alkaline battery included, must be replaced every 1 -2 years.
  • Supplied with fixings: 2 x screws and 2 x rawl plugs.
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Choice No. 10
Kidde 10LLDCO Ten Year Life Carbon Monoxide Alarm Digital Display with Sealed Longlife Battery
1,871 Reviews
Kidde 10LLDCO Ten Year Life Carbon Monoxide Alarm Digital Display with Sealed Longlife Battery
  • Digital display that shows current CO levels (from 10 ppm)
  • 10 year sealed battery
  • 10 year manufacturer's warranty
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Choice No. 11
Combination Smoke Alarm& Carbon Monoxide Alarm Detector, With Digital LCD Display and Voice Warning Battery Powered Suitable for use in your Home, Garage, Office (AA Batteries NOT Included)
2 Reviews
Combination Smoke Alarm& Carbon Monoxide Alarm Detector, With Digital LCD Display and Voice Warning Battery Powered Suitable for use in your Home, Garage, Office (AA Batteries NOT Included)
  • QUICK & EASY INSTALLATION :The plug-in design makes it super easy to install. Carbon monoxide is lighter than air, so it is recommended to install it at a distance of 30cm from the ceiling,3-color flashing LED indicator (red, green, yellow)
  • MULTIPLE FUNCTIONS: Malfunction and low battery warnings allow you to easily know the working status of the alarm; Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; in case of an emergency, an alarm tone of over 70 dB will sound throughout your entire home, instantly alerting the entire household, even those in sleep
  • ACCURATE, RELIABLE & HIGHLY SENSITIVE: Equipped with both photoelectric and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms
  • NOTE: It is not recommended to install it in corners, cabinets and other places where there is no air circulation, and it is prohibited to place it in places with oily smoke
  • WARRANTY - If you meet any quality issues with Usb Wifi Adapter, just contact us via or Amazon question message, We will consistently spare no effort to provide good service and experience for every customers!
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Choice No. 12
Mercury | Battery Operated Carbon Monoxide Alarm
964 Reviews
Mercury | Battery Operated Carbon Monoxide Alarm
  • Up to 7 years working life span from first power up
  • Battery powered to allow the unit to remain functional in the event of a power cut
  • LED status indicators; green for power, amber for fault and red for alarm
  • Tested in an approved laboratory in the UK to ensure full compliance to EN50291-1:2010+A1:2012
  • LCD display shows the particle sampling count, ambient temperature and battery level
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Choice No. 13
Kidde 7DCOC 7DCO Kidde Carbon Monoxide Alarm, White
4,665 Reviews
Kidde 7DCOC 7DCO Kidde Carbon Monoxide Alarm, White
  • Battery operated (3AA’s included)
  • Two LED’s - Red: Illuminates when in alarm mode, Green: Illuminates when DC power is present, normal operation
  • Test/reset button tests CO alarm circuit operation and allows you to immediately silence the alarm
  • Digital display continuously displays CO levels detected
  • End of life alarm alerts user to replace the alarm after 10-years protection
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Choice No. 14
Kidde 10SCO Combination Smoke and Carbon Monoxide Alarm with Voice Notification
2,864 Reviews
Kidde 10SCO Combination Smoke and Carbon Monoxide Alarm with Voice Notification
  • Battery-powered combination alarm that offers protection from the dual dangers of smoke and carbon monoxide in a single unit for added convenience - The voice alarm feature audibly announces which Danger has been detected.
  • Designed to be wall- or ceiling-mounted, this battery-powered unit is perfect for when space is limited but protection is paramount. It can be used in most locations throughout the home but check in in-pack guidelines for specific installation instructions.
  • The voice warnings given by this alarm are: "fire! Fire!" "Warning! Carbon monoxide" "Caution, carbon monoxide previously detected" "Hush mode activated" "Hush mode cancelled" "Low battery"
  • Model 10Sco | Power supply 9V battery supplied as standard | temperature range 0˚C to 40˚c | humidity range up to 90% relative humidity (RH) non-condensing | Alarm dimensions 145 x 145 x 45mm | Alarm weight 360g
  • Warranty 10 years | approvals: BSI certified to EN14604: 2005 (smoke) | BSI certified to EN50291-1: 2010 (carbon monoxide) | CE tested and certified
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On SaleChoice No. 15
Scondaor Carbon Monoxide Alarm Detector EN 50291 Certified, CO Alarm Detector with Digital Display, Battery Powered, 10 Year Sensor
1,806 Reviews
Scondaor Carbon Monoxide Alarm Detector EN 50291 Certified, CO Alarm Detector with Digital Display, Battery Powered, 10 Year Sensor
  • EN 50291 Certified Carbon Monoxide Detector: High accuracy and reliable long life electrochemical CO sensor and the CO alarm detector complies with EN 50291 standard
  • Large Digital LCD Screen: Display CO concentration PPM Level and Battery status. And three LED indicators display three working status: Red(Alarm mode), Yellow(Fault mode), Green(Power On, Normal Standby mode)
  • TEST/MENU Button: Press "Test" to manual test the CO alarm circuit operation to ensure the proper working and Press "MENU" to view the alarm record. The alarm features self-test function automatic detect hardware failures such as internal circuit and CO sensor in normal standby mode to ensure the alarm always proper operating
  • Sound 85dB audible alarm and Red LED flashes when dangerous level CO gas is detected to alert home members effectively
  • 3x1.5V AA Battery operated(Battery Not included). Alarm features Low Battery warning to alert users to replace the batteries. Alarm features End of Life warning to alert user to replace the alarm after 10-year operation
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On SaleChoice No. 16
FireAngel CO-9X-10T-FF Carbon Monoxide Alarm, Multi
702 Reviews
FireAngel CO-9X-10T-FF Carbon Monoxide Alarm, Multi
  • Electrochemical sensor designed to accurately measure low levels of CO
  • LED status indicators for power and alarm mode
  • Co sensitivity level: 50 ppm
  • Easy to install, portable so can be taken on holiday or installed within the home
  • Certified to BS EN50291-1: 2010+A1: 2012 and BS en50291-2: 2010
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On SaleChoice No. 17
Honeywell XC70 Carbon Monoxide Detector Alarm - BNIB 7 Yr Guar (Replaces H450EN)
556 Reviews
Honeywell XC70 Carbon Monoxide Detector Alarm - BNIB 7 Yr Guar (Replaces H450EN)
  • Up to 7 year lifespan and manufacturer warranty
  • Battery powered - sealed lithium long-life battery. 90db alarm
  • Certified for use in caravans, on boats and domestic applications
  • Separate coloured status LEDs for alarm, power, fault and ventilate
  • Suitable for free standing or wall mounting
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Choice No. 18
Kidde 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v
110 Reviews
Kidde 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v
  • Mains powered with 7 year sealed rechargeable lithium back-up battery
  • Provides end of life warning when the alarm has reached the end of it's life
  • LED display indicates alarm state, power supply status and low battery
  • Digital display provides early warning of intermittent and low CO levels and shows FIRE or CO when interconnected with other Kidde alarms
  • Option to have standard LED or digital display
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Choice No. 19
INTEY Carbon Monoxide Detector with Digital Display& CO Detector Alarm with Rechargeable Battery for Detection of Home CO Alarm Detector
697 Reviews
INTEY Carbon Monoxide Detector with Digital Display& CO Detector Alarm with Rechargeable Battery for Detection of Home CO Alarm Detector
  • ■ Rechargeable lithium battery - ♥ Turn on the switch on the back before charging! ♥ Support long-term connection and charging. You can use it for six months after a single charge for 4-6 hours, allowing for cyclic charging.
  • ■ Real time concentration - The display shows the real time carbon monoxide concentration. To save power, when no operation is performed, the detector screen will automatically turn off after a certain period of time, then press the screen to turn on.
  • ■ Three-color light indication - Red light detects carbon monoxide concentration, green light detects if the detector is operating normally, and yellow light detects detector fault and voltage.
  • ■ Buzzer alarm - Ultra high buzzer alarm sound, ≥85dB / m, even for the elderly sleeping can hear clearly. Installation on each floor of the multi-storey building is recommended to ensure that alarm sounds can be heard in every location.
  • ■ Self Test Mode - In self test mode, the three indicators flash simultaneously and the detector beeps to indicate that the function is normal. It is recommended to check if the detector is normal every month.
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Choice No. 20
X-Sense Carbon Monoxide Alarm Detector 10-Year Life, Replaceable Battery Operated CO Alarm Detector with Digital Display, Conforms to EN 50291 Standard, CO03D
601 Reviews
X-Sense Carbon Monoxide Alarm Detector 10-Year Life, Replaceable Battery Operated CO Alarm Detector with Digital Display, Conforms to EN 50291 Standard, CO03D
  • ACCURATE & RESPONSIVE: Featuring an advanced Figaro electrochemical CO sensor and a high-performance ST chipset, the X-SENSE Carbon Monoxide Alarm instantly and accurately detects concentration levels of CO, an invisible, deadly gas, 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)
  • 10-YEAR 24/7 PROTECTION: Powered by 3 replaceable 1.5 V AA batteries, and with a sensor life of 10 years, this CO alarm provides the best 24/7 protection, even during power outages; a low battery alert informs you when the batteries need to be changed, and an end-of-life warning lets you know when it’s time to replace the unit
  • 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
  • LARGE LCD DISPLAY & HIGH SENSITIVITY: Clearly displays the battery life and the real-time CO levels taken from the surrounding air, with an updated measurement taken every 10 seconds; responds to various CO threshold levels, with the lowest alarm threshold at 30 PPM, ensuring your ultimate CO protection
  • 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
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