10 Best carbon monoxide detectors in Singapore

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Last Updated - 26/09/2025

Best Choice
01

Kidde

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Kidde Smoke & Carbon Monoxide Detector, Combination Smoke & CO Alarm with Lithium Battery, Replacement Alert
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

UL Certified, 10-year limited warranty
Replacement Alert - can be silenced for 3 days at a time, maximum of 30 days; tamper-resistant technology deters removal of the unit or battery from the wall or ceiling
Photoelectric & electrochemical sensing technology - combination smoke & CO detector detects visible fire particles, 85 decibel alarm alerts of fire
No battery replacement needed - combo smoke and CO detector operates on a non-replaceable, 10-year lithium battery
Fire & CO Detector in 1 unit with alert modes, LED light, test-silence button, & Replacement Alert: a chirp that notifies when the unit needs to be replaced

S$ 98.59
Best Value
02

Kidde

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Kidde 21010170 10 Year Smoke and Carbon Monoxide Alarm Detector | Photoelectric | Kitchen | Model P3010K-CO
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Self-activation – Alarm automatically activates when attached to the mounting bracket.
Sealed-in lithium battery – Sealed-in lithium power supply; No battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm.
Photoelectric Sensor – Smoke alarm contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms.
Combination smoke and carbon monoxide alarm – Smoke and CO sensing technologies work together to detect real fires faster and reduce cooking-related nuisance alarms.
Alarm memory – Rapidly flashing LED alerts user if the alarm has sounded since the last time the test/reset button was used.

S$ 98.07
03

Kidde

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Kidde Carbon Monoxide Detector Alarm |Battery Operated | Model # KN-COB-B-LP2 White
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Test/reset button tests the unit for proper operation and resets the carbon monoxide alarm
Model KN-COB-B-LPM is similar to 9CO5-LP
Kidde's carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL)
Battery operated with 3 AA batteries included; provides protection during power outages
Battery lockout system deters closing battery compartment without installation of batteries

S$ 31.15
04

GasDoc

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GasDoc DS-399 Carbon Monoxide Detector, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

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Powerful Rechargeable Battery: Featuring a powerful 1000mAh lithium battery, this CO alarm is equipped with Type-C charging capability, ensuring minimal downtime. A full charge provides up to 168 hours of continuous use, making it a reliable choice for long trips and extended outdoor stays
Easy to Carry: This handheld CO tester is designed to be extremely compact, roughly the size of your palm. Its small size makes it easy to carry, whether tucked in your pocket or attached to your luggage using the included lanyard. Its portability ensures that safety is always within reach during your travels
Carbon Monoxide Detector: The DS-399 Portable Carbon Monoxide Detector can detect CO levels ranging from 0 to 1000 PPM. It also allows you to set custom alarm thresholds for even earlier detection, ensuring your safety. In addition, the CO meter monitors real-time temperature and humidity, providing you with accurate environmental data
Audio-visual Alarm: The detector allows you to set custom CO alarm thresholds. When the gas concentration exceeds the set alarm threshold, the device emits an audible alarm, and the ring indicator light below the screen changes color based on the alert level. This dual alert system provides double protection for your safety

S$ 66.50
05

FIRST ALERT

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FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

To ensure complete protection make sure to place one on each level of your home and in each bedroom
Keep your family safe with this 2-pack of easy to use, battery operated carbon monoxide alarms; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
All first alert CO alarms are rigorously tested to meet UL standards
A loud 85-decibel alarm sounds when CO levels reach dangerous levels
5-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety

S$ 50.77
06

FIRST ALERT

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First Alert Smoke Detector and Carbon Monoxide Detector Alarm | Battery Operated, SCO5CN
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

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Smoke and Carbon Monoxide Alarm

S$ 56.16
07

LSENLTY

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LSENLTY Carbon Monoxide Detectors, 3 Years Standby Time, 0-999 CO Detector Range, 85dB Loud Carbon Monoxide Detector for Travel and Camping (Mesh Bag, Battery Included)
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Portable carbon monoxide detector: compact size, dimensions 3.2 x 1.97 x 1.06 inches, weight 80g, with mesh bag (the mesh bag is at the bottom of the box, don't forget to open the plastic layer inside the package), adhesive coating and fixing screws. Place it on the table, on the wall, in your suitcase or in your backpack. Suitable for camping, travel, car and outdoor use.
Memory function: the carbon monoxide detector continuously monitors When you press the button, the peak CO concentration for this period will be displayed with a beep.
Indicator Light Means The green indicator light flashes to indicate that the product continuously detects the carbon monoxide concentration in the environment and updates the value every 3 seconds. A red indicator light indicates that the battery of the product is low or has a malfunction. When an error signal is signaled, Err is displayed on the screen and a beep sounds. Indicates that the device is defective or the sensor has reached the end of its life.
CO Concentration Range The detection range of CO detector is 0-999 o'clock. Updates every 3 seconds. If the concentration exceeds 50ppm, the product will sound an alarm within 60-90 minutes. If the concentration exceeds 100ppm, the product will sound an alarm within 10-40 minutes. If the concentration exceeds 300 ppm, the product triggers an alarm within 3 minutes. CO detectors have a volume of 85 dB. If the CO concentration in the environment exceeds 50 ppm, an alarm will sound immediately.
3 Years Standby Time The carbon monoxide detector is equipped with a battery that has a battery life of up to 3 years. When the battery of the product is low, Lb is displayed on the screen and an alarm is triggered every 20 seconds and the red light flashes. If the alarm is repeated 15 times, the CO detector will automatically shut off.

S$ 30.89
08

Andyssey

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Andyssey ZA326 H01 Carbon Monoxide Detector with 10 Year Battery | Portable Detector with LCD Display | Certified to 50291, Alarm 85 DB, 1 Piece
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Visual display of CO concentrations: The detector automatically records the maximum CO concentrations on its LCD screen. This allows you to view alert history and understand the causes of alarm triggers, even when you are away from home. The LCD screen is complemented by a three-color LED: red for alarm, yellow for error, and green for normal operation.
Long-lasting protection (10 years): The CO detector is equipped with a built-in non-replaceable battery offering a lifespan of 10 years. So you can count on continuous protection for a decade, without having to replace the device. Extra comfort for your safety and peace of mind.
Effective protection against carbon monoxide (CO): Thanks to its advanced electrochemical sensor, this detector detects dangerous carbon monoxide (CO) concentrations in real time from 23 ppm to 999 ppm. When a danger is detected, it emits a loud 85dB audible alarm to alert you immediately, ensuring maximum safety. Certified to EN 50291, it meets the highest safety and performance standards.
Easy Installation and Flexible Placement Options: This CO detector is extremely easy to install and use. It can be placed on any flat surface such as a table or desk. In addition, all materials needed for secure wall installation are included, providing great flexibility for placing the device wherever you need it.
Compact and Portable - Ideal for the Whole Family: With its minimalist and sleek design, this carbon monoxide detector is not only compact but also portable. It can be placed easily on a table, shelf or nightstand. Plus, it's versatile enough to be wall mounted or used freely, ideal for home, office, hotel, or even when travelling.

S$ 48.47
09

PUTECCH

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Carbon Monoxide Detectors, Portable CO Detector Battery Powered, Handheld Carbon Monoxide Monitor Alarm Detector with LCD Display for Home/Outdoor/Travel (Batteries Included)
8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

WHAT YOU WILL GET - 1x PUTECCH HD07 Battery Operated CO Detector, 2x AAA Batteries, 1x User Manual and 1x Lanyard Ring. Please feel free to contact us if you have any questions or concerns. We provide 12-month product service and lifetime technical support.
LCD DISPLAY AND AUDIO ALARM - The 1.1inch LCD screen displays the real-time CO concentration from 0 to 999 ppm, buzzer status and battery level. When the CO concentration exceeds the specified level (50 ppm), the entire screen will turn red and a loud audible alarm will sound. When the battery voltage falls lower than the working voltage, the device will sound an audible alarm of "di-di-di" every minute. After the fifth alarm, the device will automatically turn off.
HIGH QUALITY CARBON MONOXIDE DETECTOR - The portable carbon monoxide meter is made of high-strength ABS material, which is sturdy and durable. High-precision electrochemical sensor can more quickly and accurately monitor the CO concentration in the surrounding environment.
EASY TO USE - Install the battery, long press the power button to turn on the handheld CO monitor and wait 28 seconds to warm up. You can press the “Hi” button to adjust the screen brightness, and press the "Lo" button to turn on or turn off the alarm.
BATTERY POWERED AND POWER SAVING MODE - This pen-type CO detector is powered by 2x 1.5V AAA batteries (package includes). In order to save battery life, the carbon monoxide alarm detector will automatically turn off the screen backlight and enter power saving mode after about 1min of no operation. NOTE: In power saving mode, the gas sensor continues working and monitoring the carbon monoxide concentration. You can press any button to light up the screen again.

S$ 41.08
10

SCADOOSH

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Scadoosh Smoke and Carbon Monoxide Detector with Voice Alerts, Large LCD Display, LED Warning Light Indicators and Test Button, Battery Operated
8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Test Button: When pressed, the button will initiate the testing sequence within the alarm. You will hear a voice and loud beeps with a flashing red light and LCD display ’’CO 0000’’ to show that everything is working with the alarm and then it will stop automatically.
Low Battery Promt: If it is detected that the battery voltage is low, a voice prompt sounds every 180 seconds and the LCD displays LB (Low Voltage Symbol).
LCD Acurrate Display: The smoke and carbon detector collects air samples every 5 seconds to ensure fast response in case of danger. When the alarm is triggered, the LCD display shows the CO concentration and lights up. In standby mode, the LCD display switches off so that you are not disturbed and the green light flashes every 40 seconds.
Intelligent Voice Alerts for Double Protection: Tells you whether the danger is smoke or carbon monoxide. The talking photoelectric smoke and carbon monoxide (co) detector features advanced technology to not only detect smoke, but also use voice alarms to warn you and your family of a fire or carbon monoxide hazard.
Insect Proof Design: This battery-operated smoke and CO detector is carefully equipped with an insect screen that prevents insects from entering the device and triggering a false alarm.
Easy to Install: This smoke and carbon monoxide detector combo is easy to install and keeps working even if there is a power outage. Requires no rewiring; this smoke and carbon monoxide detector can be easily mounted on any wall or ceiling with the included mounting bracket, screws and anchor plugs. The easy access battery drawer allows you to change batteries without removing the alarm from the ceiling. Be sure there is at least 1 detector on every level of your home, including the basement.
360 Air Inlet Ring for Smoke and CO Gas: Ensures complete accurate inspection without blind spots.
2 in 1 Protection: A home can become engulfed in flames in minutes. Protect your family with the combo smoke and CO alarm detector in a single device. With the powerful electrochemical carbon monoxide sensing technology as well as a photoelectric sensor the device ensures a quick and reliable detection of both smoke and elevated levels of carbon monoxide, a colorless, odorless gas.

S$ 28.91