Carbon Dioxide (CO2) Handheld Gas Detector |
**IMPORTANT: With an abundance of caution for our employees health and safety the CO2Meter offices will be closed Thursday, September 29 and Friday, September 30 because of the pending impact of Hurricane Ian. Orders placed online will be fulfilled once our offices reopen.**

Carbon Dioxide (CO2) Handheld Gas Detector

Carbon Dioxide (CO2) Handheld Gas Detector
Regular price $349.00

POs or wholesale quantity discounts click here

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

    With long-term data storage, the user can measure ambient gas levels by data displayed and gain indication by visual and audible alarm settings.


    • Dual Beam NDIR technology to measure CO2 concentrations
    • Large LCD display for easy readability 
    • Audible Alarm
    • Data Logging with 16GB SD Card
    • LCD Back light for easy readability by dark
    • Li-ion rechargeable batteries included


    This device will NOT meet requirements for CO2 safety monitoring which requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to our CO2 Safety Products page for devices that meet your needs.

    Call us at (877) 678-4259 toll-free or email us 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: CO2 (Carbon Dioxide), Temperature, %RH, and Baro
      • Sensing method: NDIR (Non-Dispersive Infrared)
      • CO2 Measurement range: 0~9999 ppm 
      • CO2 Accuracy: ± 50ppm, ± 5% of reading (0~5,000 ppm)
      • Response Time: 1 min
      • Temperature: 0~50°C
      • Power Supply: 3 Rechargeable Batteries - Li-ion 18650 3.7V 
      • 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 - See CO2Meter Terms and Conditions.

      Software Options

      This device features data logs that are stored to a micro SD Card. The GasLab® 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 Batteries 

      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 Handheld CO2 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...