Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
10 Best carbon monoxide detector portables of 2025
Large Capacity Battery: The CO detector features a powerful 1000mAh lithium battery with Type-C fast charging support, eliminating the need for frequent replacements and ensuring long-lasting operation. A single full charge lasts 140 hours, providing reliable safety during extended trips, making it an ideal travel companion
Easy to Carry: The CO Meter is designed to be compact and lightweight, measuring 7.6x6x3 cm, making it easy to fit into your luggage without occupying much space. The included lanyard allows for easy carrying, even when traveling light. Ensuring safety and peace of mind wherever your journey takes you
Carbon Monoxide Detector: The DS-100 is a 3-in-1 portable carbon monoxide detector that can detect carbon monoxide levels from 0 to 1000ppm, it will alert you when the concentration reaches 50 ppm. This allows you to detect and mitigate risks at low level carbon monoxide. It also measures temperature and humidity, enables you to observe temperature and humidity in real time, convenient for daily use
【Visual & Audible Alarm】This portable CO detector uses both visual and audible alarms. When the concentration of CO is detected to be greater than the preset alarm value (low alarm value 50PPM, high alarm value 500PPM, can be manually adjusted), the co detector will emit a beeping sound and the screen red light flashing alarm, the sound and flashing frequency of the high alarm mode is higher. The alarm sound can be manually turned off.
【Professional Electrochemical Sensor】This handheld carbon monoxide CO tester adopts a professional electrochemical sensor to accurately detect carbon monoxide CO gas and display the real-time concentration on the backlit LCD screen. Swiftly detects CO levels from 0-5000 ppm. It has an automatic calibration function to ensure accurate detection of CO gas and protect the safety of your family and property. It is a must-have tool for homeowners, drivers, campers, DIY-ers, tourists, etc.
【Practical Functions】With high definition LCD display screen, which can show the data more clearly, give you a better using experience. Power-save modes, auto power off after about 10 minutes if there are no operation and measurement signal. You can also cancel auto power off function in case you need. Support Data Hold, convenient to record data during different measurement. It has a low battery alert function, a timely reminder that it is time to replace the battery.
Curious about how we select the top products for you? Explore How It Works
How do we rank
Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
Measurement Range The Handheld Carbon Monoxide Meter measurable CO concentration range is 0~1000PPM (accuracy 1PPM), and the concentration alarm value can be set freely (preset value: 24PPM); when the CO gas concentration reaches the co detector alarm level, the sound and light alarm will work. Two temperature units (℃ / ℉) (temperature range: 0~50℃/32~122℉).
Easy to Use The Handheld CO Detector is small in size (5.31 in * 1.97 in * 1.38 in) , light in weight (3.14oz/0.17 lb). Easy to carry and operate. The high-definition LCD backlight screen makes carbon monoxide reader easy to use even at night.
CO Meter Handheld The Carbon Monoxide Detectors monitor the CO concentration in the air，high precision sensing . Carbon monoxide tester with automatic calibration function. The CO detector portable has high-definition LCD backlight screen makes it easy to read even at night. NOTE: Battery Not Included.
The device is supplied with 2 x AA batteries, which can be replaced as required when the alarm provides the low battery warning sound
Pressing the large test button in the event of a low battery warning will activate our sleep easy feature which silences the low battery chirp for 8 hours
Advanced electrochemical sensor detects dangerous levels of Carbon Monoxide (CO) in your home and alerts you with a clear, loud alarm
Safe & Reliable: This NEW advanced Carbon Monoxide Detector,Equipped with LED display screen and a highly sensitive electrochemical sensor , easy to read numerical values (ppm),accurately continuous monitoring of Carbon Monoxide levels and quickly,You could clearly understand the concentration of PPM and take corresponding measures when danger occurs to keep your family safe,To ensure complete protection make sure to place one on each level of your home and in each bedroom.
Digital LCD Display: The screen displays a wide range of real-time CO levels from 000 to 999PPM. When the CO reading is above 30 ppm, the blue backlight turns on and displays real-time levels, The alarm time depends on the carbon monoxide level.Through the LCD display of the gas detector, you can read and monitor the CO concentration at any time and avoid the occurrence of danger.
Alarm standard: The alarm time depends on the carbon monoxide concentration level: 50ppm, alarm within 60 to 90 minutes; 100ppm, alarm within 10 to 40 minutes; 300ppm, alarm within 3 minutes.When the concentration exceeds a certain level,the red LED flashes and a loud alarm mode occurs - 85 dB loud alarm with flashing LED.You can quickly and clearly understand the concentration of PPM and take corresponding measures.
★【MINI 3-IN-1 CARBON MONOXIDE DETECTOR】The MINI 3-in-1 Carbon Monoxide detector can accurately detect the current CO concentration, temperature and humidity in the air. Let you understand the air quality more clearly and protect the health of you and your family. The mini lanyard design makes it so convenient to carry it or hang it anywhere.
★【HIGH-PRECISION】Use a high-precision electrochemical sensor and NDIR working method to ensure its accuracy. The CO accuracy is (±5PPM or ±5%), the temperature accuracy is (±1°C), and the humidity accuracy is (±2%RH). The data is refreshed every 2 seconds to know the air quality of the environment at any time. The multi-hole air duct design improves the air flow rate. Close to the sensor with multiple openings, the real-time air circulation and convection monitoring is more accurate.
★【4 AIR QUALITY INDICATORS & SOUND WARNING】According to the CO concentration data, the CO detector can display 4-segment graded color display. 0~50ppm (green/safe), 51~100ppm (yellow/needs attention), 101~200ppm (orange/warning), 201~1000ppm (red/dangerous). The default CO detector will warning when the CO concentration exceeds 50PPM. As the CO concentration PPM value increases, the frequency of the warning will also increase. Short press the "S" key to switch the buzzer on/off.
Simple to Use: Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to
Energy Saving: Use this battery powered carbon monoxide alarm to ensure the safety of your family. The battery powered alarm can continuously monitor CO. (Operated by 3 x 1.5V AA Batteries (not included)
Accurate Reliable：And highly sensitive alarm equipmen Electrochemical CO sensor; Quick detection To danger Notify you immediately when CO concentration occurs。
PROFESSIONAL TOOL: The gas detector is a device that detects the presence of CO gases in an area, often as part of a safety system. The detector can continuously monitor the CO gas concentration accurately in the surrounding environment. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down.
POWERFUL FUNCTION: Sound alarm works when CO gas concentration reaches the level of the alarm. The concentration of alarm value can be freely set. Auto shut off in 10 minutes without any operation. With a wide measuring range, the ambient temperature can be measured in 2 temperature units (°C and °F).
HGIH QUALITY：This CO detector has a large LED backlight screen that allows users to easily cope with harsh environments such as darkness, making it easy to read and free users from time and place constraints. Adopt of ABS engineering plastics with high toughness, wear-resistance and stability, with a low power consumption and high precision.
Compact & Portable Design: Lightweight body (fits in one hand) for desktop use or on-the-go testing. Perfect for homes, offices, hotels, and travel.
6-In-1 Detection: Monitor PM2.5, PM10, HCHO, TVOC, CO, and CO2 simultaneously with one device – no need for multiple detectors. Ideal for comprehensive air safety checks.
3.5'' LCD Clear Display: Large screen with instant visual feedback shows precise numeric values and trends. Easily track air quality changes day or night.
★ 【With a wide measuring range】--the ambient temperature can be measured in 2 temperature units (°C and °F).
★ 【Professional and accurate measurement】--A portable instrument for the detection of carbon monoxide (Co) gas.Very high accuracy (± 5% or ± 10PPM),the reaction time is <60s.With a low power consumption and high precision.The service life of the sensor is 3 years.
★ 【Powerful function】--Can continuously monitor the CO gas concentration in the surrounding environment.Can set concentration of warning value.Sound and light warning works when CO gas concentration reaches the level of the warning.
Discover top deals and categories on AmazonCheck Deals
Curious about how we select the top products for you? Explore How It Works
