Portable CO2 Detector and Alarm

Portable CO2 Detector and Alarm - CO2 Meter
Regular price $349.00

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The GasLab Plus CM-501 is a portable carbon dioxide (CO2) detector designed to measure concentrations in many applications and industries.

    With long-term data storage, ambient gas levels can be read in real time on screen or saved for data analysis. Includes visual and audible high CO2 alarms.


    • šŸŽÆĀ ACCURATE:Ā Precise NDIR technology to measure CO2 concentrations
    • šŸ’»Ā EASY-TO-READ:Ā Large LCD display for easy readabilityĀ 
    • šŸšØĀ AUDIBLE:Ā IncludesĀ Audible Alarm for High CO2 Levels
    • šŸ“ˆĀ DATA:Ā IncludedĀ Data Logging with 16GB SD Card
    • šŸ‘Ā PLUG-AND-PLAY:Ā Easy to Use, turn on the switch and start monitoring
    • šŸŒ™Ā BACK LIGHT:Ā LCD Back light for easy readabilityĀ in theĀ dark
    • šŸ”‹Ā RECHARGEABLE:Ā Li-ion rechargeable batteries included


    This device WILL NOTĀ meet requirements for CO2 safety monitoring that requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to ourĀ CO2 Safety ProductsĀ page for devices that meet your needs.

    Call us at (877) 678-4259 toll-free orĀ email usĀ to speak with our technical sales team about purchasing the correct device.


    • Food and Beverage
    • Brewing
    • Agriculture
    • Poultry
    • Scientific
    • Medical
    • Safety, and many others


      • Measures:Ā CO2 (Carbon Dioxide), Temperature, %RH, and Baro
      • Sensing method: NDIR (Non-Dispersive Infrared)
      • CO2 Measurement range: 0~9999 ppmĀ 
      • CO2 Accuracy: Ā± 50ppm, Ā± 5% of reading (0~5,000 ppm)
      • Response Time: 1 min
      • Temperature:Ā 0~50Ā°C
      • Power Supply: 3 Rechargeable Batteries - Li-ion 18650 3.7VĀ 
      • Battery Life: tested to 24+ hours
      • Lifespan: NDIR - 15 years
      • Dimensions: 204.5 x 91.7 x 49.6 mm (8.1 x 3.6 x 2 inch)
      • Weight: 305g (without batteries)


      • Handheld Multi-Gas Detector
      • Manual
      • USB Charging Cable
      • SD Card (16g), Data Logging Capability
      • Three (3) Li-ion rechargeable batteries


      • 1 year - SeeĀ CO2Meter Terms and Conditions

      Software Options

      This device features data logs that are stored to a micro SD Card. The GasLabĀ® Software is not compatible with this device.

      BAT-18650 - EBL 18650 3.7V Li-ion Rechargeable Batteries

      EBL Intelligent Batteries (need 3 for device) provides a fast charge and are upgraded ETL certified to be used with all CM-500 series handheld gas detectors.

      EBL Universal Battery Charger for 3.7V Rechargeable BatteriesĀ 

      With the EBL Universal Battery Charger, users will be able to charge the lithium batteries when plugged into a USB outlet. The battery charger also provides a clear indication of charge levels, turning green after fully charged.

      CM501 HandheldĀ CO2Ā Gas Detector
      • Data Sheets

      • Manuals

      • Technical Documents

      • Videos

      • Additional Resources

      • Case Studies

      Customer Reviews

      Based on 9 reviews
      Paul Knerr

      Using for Covid probability analysis

      My short term review is 5 stars

      It works It works well. Fast to respond when testing easy to see numbers.
      It has accurate co2
      It has accurate temp
      It has accurate Humidity.
      The battery Life is good.
      The only thing left is long term life of the meter. Since I have it for 17 days I can not comment on that Maybe I follow up in six months and a year.

      Bud Dietrich

      Carbon Dioxide (CO2) Handheld Gas Detector

      Helpful CO2 Meter

      The CO2 meeter we received is filling our need to help us determine the air exchange in our home and office. It unfortunately only has a 24 hour battery but otherwise seems to be doing what's needed.

      David Ulrich
      CO2 meters

      I've purchased 3 type of CO2 meters from your company and one O2 meter. The simple CO2 meters are wonderful, the O2 meter has a bad charging receptacle and the most recent hand held CO2 meter is difficult to use

      "Easy to install, easy to set up, and easy calibration - just what I was looking for."

      - Phillip Farrar
      Water Plant Superintendent

      Read More Reviews...