Best Handheld Carbon Monoxide Detectors Reviews Of 2023

Carbon monoxide is a toxic gas, which is a result of incomplete combustion and it can be fatal under certain circumstances. The Handheld Carbon Monoxide Detectors use one or more sensors to detect changes in carbon monoxide levels. It can have metal oxide semiconductors that include silica chips, which detect carbon monoxide and trigger an alarm via electrical signals. It can have electrochemical sensors. These sensors use electrodes in chemical solutions to sense changes in the electrical currents if carbon monoxide is present. It can also have biometric detectors that use color-changing gels, which absorb carbon monoxide to trigger the alarm.

A carbon monoxide detector can alert you of the presence of carbon monoxide in three ways. This includes visually via either digital readout or flashing light. It can also do so physically by vibrating against your hand and audibly by sounding off a beep. Below are the best carbon monoxide detectors available in the market.

Bestseller Handheld Carbon Monoxide Detectors On Amazon:

SaleBestseller No. 1
Kidde Carbon Monoxide Detector, AC Plug-In with Battery Backup, CO Alarm with Replacement Alert
Easy & quick installation - plugs into any standard AC wall outlet; UL Certified, 10-year limited warranty
$29.99 $22.84
Bestseller No. 2
First Alert HOME1 Rechargeable Standard Home Fire Extinguisher UL Rated 1-A:10-B:C, Red
U.S. Coast Guard–approved for marine use. Lightweight and easy to use
SaleBestseller No. 3
Kidde Smoke & Carbon Monoxide Detector, Battery Powered, Combination Smoke & CO Alarm, Voice Alert
Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries; UL Certified, 10-year limited warranty
$44.99 $37.34
SaleBestseller No. 4
Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In with Battery Backup, Digital Display , White
Loud pulsing alarm that will sound to alert you to a potential problem; Low battery warning feature indicates when the battery needs replacement
$59.97 $51.25
SaleBestseller No. 6
First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
A loud 85 decibel alarm sounds when CO levels reach dangerous levels; All first alert CO alarms are rigorously tested to meet UL standards
$41.99 $20.99
Bestseller No. 7
First Alert Radon Gas Test Kit, RD1
The simple and safe way to test for radon; Listed under the EPA radon gas measurement proficiency program
SaleBestseller No. 9
Kidde Battery Operated Carbon Monoxide Alarm with Digital Display
CO detector with alert modes & 2 LED lights that pulse for power & CO detection; Protects during a power failure - CO detector operates on 3-AA batteries
$24.97 $23.73

List of 10 Best Handheld Carbon Monoxide Detectors Review in 2023:

10. BW Technologies QTXWHNAYNA 4-Gas Detector

10. BW Technologies QTXWHNAYNA 4-Gas Detector

BW Technologies QTXWHNAYNA gas detector features a catalytic bead sensor that servers ambient combustible gases. It also includes an electrochemical cell sensor, which monitor ambient carbon monoxide, oxygen and H2S levels. Use this gas detector in industrial and natural settings as well as other personal safety and ambient air surveying applications. The gas detector further has an impact-resistant boot and wraparound bumpers for long-term durability.

BW Technologies QTXWHNAYNA also includes preset levels, which are low, high, TWA and STEL levels. The gas detector will alert you with vibration, visual and audio simultaneously once the gases reach the preset level. LCD screen provides you with four ambient sensor self-test, bump, alarm condition, gas concentrations, and calibration status and battery level.

Reasons to buy

  • Compact and portable
  • Sturdy and durable
  • Multi gas detection
  • Large LCD screen
  • Multiple alert systems

9. Extech CO15 CO Meter, Handheld Carbon Monoxide Detectors

9. Extech CO15 CO Meter

Extech CO15 CO detector features an LCD display. This allows you to view both the CO levels and maximum CO reading from when you turn the detector on. The detector also includes an electromagnetic sensor that provides you with long life CO surveying. You can further adjust the CO warning levels at 25, 30, 35, 45, 50, 70, 100 and 200ppm.

Extech CO15 CO also has visual and audible alarms that activate once the CO level reaches your preset level. The detector is compact and lightweight, which allow you to travel with it anywhere. It also has backlighting that you turn on and off with the button above the power control. Your purchase includes batteries, wrist strap and a pouch.

Reasons to buy

  • Portable design
  • Backlit display
  • Easy to use
  • Durable electrochemical sensor
  • Adjustable CO ppm warning levels

8. ANPIGGY Handheld Carbon Monoxide Detectors

8. ANPIGGY Handheld CO Detector

ANPIGGY Handheld CO detector has a compact and portable design. You can use it do monitor CO levels in both residential and commercial settings for a safe living and working environment. The CO detector also provides you with continuous CO monitoring, since it does not have an auto shutoff. Once the levels of CO reach the preset levels, it will alert you with vibration, sound and light.

ANPIGGY Handheld CO detector further features a large digital LCD display with easy character readings. The CO detector also measures ambient temperature in °C and °F units. The controls are intuitive for easy operation. You can also use this detector as a flashlight to see in dark environments.

Reasons to buy

  • Easy to use
  • High precision measurements
  • Clear LCD screen
  • Ambient temperature reading
  • Compact and lightweight

7. Forensics Detectors FD Multigas Detector

7. Forensics Detectors FD Multigas Detector

Forensics Detectors FD gas detector includes built-in premium electrochemical sensors with USA NIST traceable calibration. This allows you to monitor oxygen, hydrogen sulfide, carbon monoxide and combustible gases levels in both natural and industrial environments. The gas detector has an error rate better than ≤±5% F.S. and a respond time of T<30s. It also features a span and zero calibration options.

Forensics Detectors FD gas detector further has adjustable visual, vibration and audio alarms. This alerts you when the gases reach the preset levels. It also includes a digital alarm time stamp and logging. The gas detector features a waterproof, dust-proof, explosion-proof, high strength ABS and anti-slip rubber construction. Your purchase has a 1-year limited warranty to ensure quality control.

Reasons to buy

  • Rugged and durable design
  • Compact and lightweight
  • Risk-free purchase
  • Easy to use
  • Multigas detection

6. Forensics Travel Handheld Carbon Monoxide Detectors

6. Forensics Travel CO Detector

Forensics Travel CO detector is TSA security allowed, which means you can travel with it anywhere you want. It features a compact and lightweight design for convenient storage and transportation. The gas detector’s 9ppm and 25ppm alarms have EPA, WHO, NIOSH CO, ASHRAE and OSHA exposure level recommendation. You can also operate the detector with the single button.

Forensics Travel CO detector further includes a simple display that provides you with the battery status and CO ppm. It also has a red LED at the bottom, which acts as a visual alert of high levels of CO. Your purchase has a 1-year limited warranty for your peace of mind.

Reasons to buy

  • Easy one-button control
  • Risk-free purchase
  • TSA security approved
  • Compact and portable
  • 1-year battery life

5. UEi Test Instruments CO71A Handheld Carbon Monoxide Detectors

5. UEi Test Instruments CO71A Carbon Monoxide Detector

UEi Test Instruments CO71A CO detector is compact and lightweight for convenient transportation. The handheld CO detector features a simple interface, which includes a visual display. This provides you with accurate readings of ambient CO readings from 0-999ppm. It also does not have an auto shut off that allow continuous CO monitoring.

UEi Test Instruments CO71A CO detector further includes a backlit display, which enables CO readings in dimly lit environments. It also features a maximum capture that provides you with the highest CO readings. The CO detector supports audible and visual alarms to alert you of the presence of ambient CO in the room. Built-in CO sensor has a five-year life span and it reads in 1-ppm accuracy. The CO71A includes a 3-year limited warranty to ensure quality control.

Reasons to buy

  • Quality CO sensor
  • Risk-free purchase
  • Multiple safety alarms
  • Compact and lightweight
  • Low battery indicator.

4. Cheffort Handheld CO Detector

4. Cheffort Handheld CO Detector

Cheffort Handheld detector features a stabilized electrochemical CO sensor that detects carbon monoxide gas. You can also use it to measure ambient temperature and provides you with results in ℃/℉ units. The detector has a CO measurement range of 0-1000ppm and a temperature range of 0-50℃ / 32-122℉. It further has high measurement accuracy of ±10PPM and ±1.5℃.

Cheffort Handheld CO detector also has an adjustable alarm warning point. The detector is compact and lightweight with an ABS plastic body construction for long-term durability. You can use this device in multiple locations such as oilrigs, factories, firefighting and more.

Reasons to buy

  • Backlit display
  • Compact and durable
  • High precision
  • Quick response time
  • Wide measurement range

3. Klein Tools ET110 CO Meter

3. Klein Tools ET110 CO Meter

Klein Tools ET110 CO meter features eight easy to use buttons. The detector can measure different levels of CO gas concentration. It has alarm level of 35ppm and a high alarm level of 200ppm. Once the CO gas concentration level reaches these levels, it will alert you with both visual and audible alarms. The detector also has a short-term exposure limit alarm.

Klein Tools ET110 CO meter further has a backlit display with 0-1000ppm and F/C temperature measurements. It also provides you with a battery life indicator, sound level and the maximum ppm reading. The small and lightweight detector design makes it convenient to store and transport it anywhere. Package also includes four AAA batteries and a carrying pouch

Reasons to buy

  • Easy to use
  • User protection
  • Audible and visual alarms
  • Backlit display
  • Automatic power off

2. GXG-1887 Handheld CO Meter

2. GXG-1887 Handheld CO Meter

GXG-1887 CO meter has a durable ABS plastic body and a built in electrochemical sensor. This allows the detector to survey CO gas from 0-1000PPM. You can use it in chemical, coal, fire, petroleum, metallurgy, food and other industries for a safe working environment. The detector can also measure ambient temperature and provides you with readings in ℃ and ℉ for easy translation.

GXG-1887 meter further has high precision readings with an error rate of 1ppm and 0.1℃ / 0.1℉. It is also compact and lightweight for easy handling and transportation. The detector will alert you of the presence of CO with both sound and light alarms. Power the detector with the three available AAA batteries.

Reasons to buy

  • Compact and portable design
  • Loud alert
  • Easy to use
  • Battery operated
  • Backlit display

1. Pyle Handheld CO Meter

1. Pyle Handheld CO Meter

Pyle Handheld CO meter has an electrochemical sensor that monitors the presence of CO gas and measures its concentration from1-1000ppm. The meter has high precision with an accuracy of +/- 10 PPM in an operating temperature of 0- 50º C. Once the meter detects 35-200ppm CO concentration, it will alert you with continuous beeper or sound alarm. It also includes a 9V battery for power. The automatic shutdown further helps to conserve the battery life.

Pyle Handheld CO meter also features an LCD screen with backlighting for clear reading even in dimly lit areas. The detector has four intuitive buttons that include max, data hold, power button and backlit for easy operation.

Reasons to buy

  • Safety alarm
  • Three-year sensor life
  • Auto/manual zero
  • Easy control buttons
  • Automatic power off.

Key Feature to Consider For Carbon Monoxide Detectors:

Battery life

Handheld CO detectors are available with either rechargeable or disposable batteries. Rechargeable batteries are easier to maintain since you do not have to replace them once they power out. They are also echo-friendly as they have a smaller carbon footprint compared to disposable batteries. If you however forget to recharge your detector, it will be useless to you on the field once it is dead.

Memory recall

A handheld CO meter with memory recall enables you to compare your current readings to those taken previously. This makes it easy for you to tell how the gas levels have changed in a specific area over time. With this information, you will be able to adjust your action plan for a safer working or living environment.


Durability is an important factor to consider especially if your job involves treacherous environments. This is because bumps or drops may compromise the quality of your CO detector or even damage it. You will therefore, lack the ability to detect hazardous carbon monoxide putting your health at risk. To avoid this ensure that the CO detector is high quality before investing in it.


Size is among the main features to consider when investing in a carbon monoxide detector. Handheld carbon monoxide detectors are mostly small and lightweight. This makes them convenient to carry and handle. You can therefore, hold them for long periods without experiencing any strain to your hand muscles. For best on the go user experience, consider a compact carbon monoxide detector.


The ideal carbon monoxide provides you with optional adjustments to the carbon monoxide warning level. This allows you to determine whether the level of CO gas in your workspace is safe or not. It is therefore important to ensure that the carbon monoxide detector you are investing in has adjustable CO warning levels.


CO is also invisible and odorless, which makes it difficult to detect without an ambient detector. This will make your working space safer since you can survey the levels of CO in your working space easily. Use this review as a guide for the best carbon monoxide detectors.

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