Top 10 Carbon Monoxide Detectors
#1

4-in-1 Upgraded Natural Gas Leak Detector and Carbon Monoxide Detectors, Dual Sensor Gas Leak Detector & Carbon Monoxide Detectors Plug in (Temperature & Humidity) for Home, RV (Black)
Brand: NICGOL
$31.29
⭐ 4.7
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- 4-in-1 Advanced Detection: This upgraded 4-in-1 gas & carbon monoxide detector combines sensors for natural gas, carbon monoxide, temperature, and humidity in a single compact device. Features dual sensors and dual alarms for fast, accurate alerts. Detects CO, coal gas, and more.
- Quick Alert with Dual Alarm System: RV carbon monoxide detectors designed with both sound and flashing light alerts, this detector activates when gas levels reach dangerous thresholds (CO ≥ 150PPM or natural gas ≥ 5%LEL). It emits a loud ≥ 85 dB alarm and flashing red light, alerting you and your family instantly in the event of a leak.
- Energy-Efficient & Eco-Friendly: Carbon monoxide detectors plug-in design supports 110V–220V AC with ultra-low power consumption (≤ 2W). Built-in electronic sensors offer long-term use without the need for frequent replacements—saving energy and reducing waste for a more sustainable home safety solution.
- Clear LCD Display & Versatile Use: Equipped with a full-color LCD screen, this detector clearly displays real-time values of CO (0–2000 PPM) and natural gas (0–10% LEL). Its compact form factor makes it ideal for use in homes, RVs, hotels, kitchens, and cruise cabins without taking up extra space.
- Important Setup Instructions: Before first use, remove the protective film from the screen. After plugging in, wait 180 seconds for calibration. Press the test button to check the alarm. For accurate temp and humidity, allow 30 minutes.
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#2

Smoke Detector and Carbon Monoxide Detector Co2 Detector Battery Powered with Test/Reset Button 4 Pack
Brand: Linsoal
$70.99
⭐ 4.8
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- 2-IN-1 ACCURATE, RELIABLE & HIGHLY SENSITIVE ALARM: Combination smoke detector and carbon monoxide detector can sensitively detect the threat of these two gases.
- SOUND AND LIGHT ALARM: When a dangerous level of carbon monoxide is detected, the red light will flashes and a loud alarm pattern will sound---Loud 85 decibel carbon monoxide alarm with red light flash to protect your family's life and property safety from CO detector.
- APPLICATION CO DETECTOR PLACE: This carbon monoxide detector suitable for all place where it is possible to produce carbon monoxide, such as your home kitchen, bedroom, bathroom, hotel, or you are in the barbecue time, your parking garage.
- ENERGY SAVING: Operated by 3 AAA Batteries, You can hear the alarm when the power is low, don't worry about when to replace the battery.
- QUICK EASY INSTALLATION: Requires no rewiring, easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs.
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#3

3 Pack Carbon Monoxide detectors,co Detector,Carbon Monoxide Alarm,co2 Detector Battery Powered with LCD Display,Carbon Monoxide Detector,UL2034 Standards,for Home
Brand: Pumwry
$21.69
⭐ 4.1
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- Easy to Install: The co alarm and comes with screws for easy installation on walls or ceilings. Powered by 3 x 1.5V AA batteries (not included),It requires no hardwired, portable and easy installation,no need for socket, The battery means constant monitoring, even if there's a power failure! co detector battery can be used for about 36 months,It is convenient to replace the battery and has a long service life.
- High Accuracy & Reliability: Features an advanced electrochemical carbon monoxide sensor that accurately detects real-time CO lcarbon monoxide levels.
- Instant Alert: When carbon monoxide detectors rise to alarm levels, CO sensor detects CO, the red LED will flash,LCD Blue back light will be lighted, An early warning will be delivered through a loud 85-decibel alarm.
- Self-test Function and Informative LCD: The unit will sound “chirp†and red LED flashes once as power up, “888†on the LCD Then pressing the test button, the unit will sound beeps with red LED flashes. Displays real-time CO levels and remembers dangerous CO levels since the last preset. ’Err’ on the LCD to indicate the unit is malfunctioning. ‘Lb' on the LCD toindicate it low battery and need replacement. “000†displays on the LCD for 3 seconds and then enter in normal operation mode.
- Wide Application: The carbon monoxide detectors is suitable for living rooms, kitchens, bedrooms, offices, hotels, ,dormitories and portable co2 detector for travel,etc. It can effectively prevent fire accidents and provide reliable protection for your family's safety.
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#4

X-Sense Carbon Monoxide Detector Alarm with Digital LCD Display, Replaceable Battery CO Alarm Detector with Peak Value Memory, XC01-R
Brand: X-Sense
$29.99
⭐ 4.7
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- Flexible Installation: Wall-mounted or freestanding; easy to take while traveling
- High Accuracy & Reliability: Advanced Figaro electrochemical CO sensor; 5-year replaceable battery
- Instant Alert: An early warning will be delivered through a loud 85-decibel alarm
- Intuitive LED: 3-colored LED indicator flashes red, green, or yellow to indicate an alarm, power, or a fault
- Informative LCD: Shows CO levels and records the highest detected since the last reset; if CO reaches a dangerous level, the alarm will sound to warn you; for precise real-time monitoring, consider using a CO meter (this model is a CO detector)
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#5

2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office
Brand: Sylzy
$14.99
⭐ 4.1
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- Sound and Light Alarm - When dangerous carbon monoxide levels are detected,Carbon Monoxide Detectors activates a loud 85-decibel warning accompanied by a flashing red LED,PPM Value Display,Our carbon monoxide detector provides Real-time monitoring of carbon monoxide gas levels,ensuring you and your family are alerted promptly.
- High Sensitivity & Rapid Response - Featuring an advanced Carbon Monoxide Detectors Chip and electrochemical sensor, this CO Alarm quickly detects odourless, invisible, and life-threatening carbon monoxide.It responds swiftly to protect your loved ones in critical moments.
- Easy Installation -A single test/reset button simplifies operation. Powered by 3 x 1.5V AAA batteries (not included), this Carbon Monoxide Alarms offers portability and flexibility. No need for power sockets or worrying about outages—install it anywhere in your home with ease.
- Multiple Alarm Standards for Precise Alerts - Be informed of varying CO levels with these alarm settings:50ppm: Alarm triggers within 60 to 90 minutes.100ppm: Alarm triggers within 10 to 40 minutes.300ppm: Alarm triggers within 3 minutes.Stay ahead and take timely action to ensure safety.
- Versatile Application for Every Space - Perfect for a wide range of environments, including your kitchen, bedroom, bathroom, hotels, or even outdoor activities like barbecuing or in parking garages. Wherever carbon monoxide might pose a threat, this detector ensures peace of mind.
- Travel-Friendly Design: Take this compact carbon monoxide detector with you wherever you go for added peace of mind during your travels. Measuring just 4.7 × 2.7 × 0.98 inches (120 × 70 × 25 mm) and powered by AAA batteries, it’s lightweight and portable, making it perfect for carry-ons or trips abroad.
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#6

First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO605, White, 1-Pack
Brand: First Alert
$27.99
⭐ 4.7
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- Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide 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
- Simple to use, with a single test/silence button; a loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels. Low battery signal mute, quiets low battery signal for upto 8 hours
- To ensure complete protection make sure to place one on each level of your home and in each bedroom
- 7 year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety
- All first alert CO alarms are rigorously tested to meet UL standards. Item length is 3.4 inches , item width is 1.38 inches and item height is 5 inches
- Loud 85-decibel alarm sounds when CO levels are elevated
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#7

First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
Brand: First Alert
$19.99
⭐ 4.7
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- Keep your family safe with this easy to use, battery operated carbon monoxide alarm; 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.The alarm sequence should last 5-6 seconds. If it does not alarm, make sure fresh batteries are correctly installed, and test it again. If the unit still does not alarm, replace it immediately
- A loud 85 decibel alarm sounds when CO levels reach dangerous , Battery Replaceable - Yes
- To ensure complete protection make sure to place one on each level of your home and in each bedroom
- 5-year limited warranty; Equipped with end of life signal chirp, so you know when it’s time to replace the unit for safety
- All first alert CO alarms are rigorously tested to meet UL standards
- First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
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#8

Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen
Brand: SHYEEH
$8.99
⭐ 4.7
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- High Accuracy and Reliability:Shyeeh carbon monoxide detectors has a built-in advanced electrochemical sensor that detects dangerous CO levels more accurately and alarm more quickly.
- Alarm Criteria:Safeguard your home with Shyeeh co detector specific alarm thresholds: 50ppm (alert within 60-90 mins), 100ppm (within 10-40 mins), and ≥300ppm (within 3 mins). In case of danger, the carbon-monoxide detectors gives an alarm of no less than 85dB to 215-430ft²(20-40m²) to alert you.
- Bttery Pwered,Easy to Istall:You can mount carbon monoxide alarm on the wall or ceiling with screws (Include). Powered by 3 * 1.5V AA batteries (Not Included), no socket required, not affected by power outages, and can continuously monitor carbon monoxide levels to ensure your family's safety.
- Real-time Data LCD display:The co monitor provides 24-hour real-time monitoring, making it easy to read the level of carbon monoxide in your surroundings and protect your family from an invisible threat.
- Home Protection:According to data analysed in the United States, a home fire occurs every 38 seconds. The earlier the danger is recognised, the risk of death is reduced by 50%. The carbon monoxide detectors monitor will protect your home from the dangers of CO and eliminate the need to pay high detection fees for suspected carbon monoxide leaks.
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#9

Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
Brand: Kidde
$20.70
⭐ 4.2
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- Electrochemical sensor technology detects CO gas
- Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included); Install on a wall of your home or place on a tabletop
- Easy to take along for hotel and vacation rental monitoring
- Green LED indicates power to the carbon monoxide detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
- Event Memory records the last time carbon monoxide was detected or when the unit was last tested
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#10

Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
Brand: Kidde
$20.00
⭐ 4.1
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- Easy Installation - simply plug-in to a standard, 120V outlet in your home
- 2-AA battery backup provides protection during a power outage
- 85-decibel alarm announces when carbon monoxide is detected
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
- Test-Hush Button makes testing the detector or silencing false alarms easy
- End of life chirp notifies you when the alarm needs to be replaced
- UL listed with a 10-Year limited manufacturer warranty on the alarm only (not a battery performance claim). Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that replacement is needed.
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