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Carbon Dioxide (CO2) Data Loggers and Recorders

We offer a wide selection of carbon dioxide data loggers which can be used to monitor and record carbon dioxide levels in any indoor environment. Some also record temperature and other parameters making them an excellent choice for indoor air quality monitoring applications. Wireless carbon dioxide data loggers allow you to access your data remotely without needing to plug the logger directly into a PC. Most feature audible alarms to alert you of increased carbon dioxide levels and some also include outputs which can be used to trigger a process or secondary alerting device.


MicroDAQ.com offers a large selection of loggers ensuring that we probably have multiple options for almost any application. Our Technical Sales Representatives are available by chat, email, or phone and they are always happy to help you find the best solution for your particular application.

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  1. TandD TR-76Ui-S Carbon Dioxide, Humidity and Temperature  Data Logger

    TR-76UI-S

    $599.00

    Carbon Dioxide Data Logger with Wide Temperature and RH Range


    • Measures and Records Carbon Dioxide (CO2), Temperature and Humidity in Indoor Environments
    • 0 to 5,000 ppm (CO2), -25°C to 70°C (Temp) and 0 to 99% RH (Humidity) Measurement Ranges
    • Programmable Alarms and Contact Closure Output
    • Large LCD Display will Cycle Through all Three Measurements
    • Perfect for Air Quality Monitoring and IAQ Auditing

    Includes Sensors, Software, (4) AA Alkaline Batteries, USB Cable and AC Adapter

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  2. TandD RTR-576-S High Precision, Wide Range CO2, Temp, Humidity Logger

    RTR-576-S

    $699.00

    Wireless High Precision Carbon Dioxide, Humidity and Temperature Data Logger


    • Simultaneously Measure and Record Carbon Dioxide, Humidity and Temperature Readings
    • Measurement Range of 0 to 9,999ppm (CO2); 0% to 99% RH (Humidity) and -25°C to 70°C (Temp)
    • Stores 8,000 Data Samples Between Wireless Transmissions to Base Collector or Repeater
    • 150 Meters Line of Sight Transmission Range Between Devices (Logger to Base Collector or Repeaters)
    • Automatic Transmission of Data (Current or Logged) at Set Interval to Base Collector or Repeater

    Includes Logger, (4) AA Alkaline Battery, External Temp/RH Sensor, AC Adapter, USB Cable and User Manual

    A Complete System Requires a Base Collector (RTR-500DC, RTR-500GSM, RTR-500NW or RTR-500AW) and a RTR-500 Series Wireless Data Logger

    Wireless Notice and Disclaimer
    The use of Radio Frequency products is tightly regulated by local laws. Wireless products sold by MicroDAQ.com Ltd. are approved for use in the U.S. and Canada, but may not be in other countries. It is the sole responsibility of our customers to insure that the local use of wireless products purchased on this site is in full compliance with all local laws and regulations. MicroDAQ.com Ltd., and the manufacturers it represents will not accept any responsibility for the use of unapproved wireless product in other countries.

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  3. Extech Portable Air Quality CO2 Meter

    CO250

    $409.99

    Portable Indoor Air Quality Meter / Data Logger


    • Checks for CO2 Concentrations in Range of 0 to 5,000ppm
    • Calculates TWA and STEL Statistical Weighted Averages
    • Maintenance Free Non-Dispersive Infrared (NDIR) CO2 Sensor
    • User Programmable Audible Alarm, Backlit Triple LCD Display
    • Built-in RS-232 Interface for Logging Data to PC

    Includes Software, RS232 Cable and Batteries

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  4. Extech CO220 Desktop Air Quality CO2 Monitor

    CO220

    $239.99

    Desktop Air Quality CO2 Monitor


    • Measures Carbon Dioxide (CO2), Air Temperature & Humidity
    • LCD Display Shows Current Levels, Facial Icon Indicating Quality Levels and Date/Time
    • Audible High/Low Alarms, Automatic Baseline Calibration Function
    • Calculates Statistical Weighted Averages, Dew Point and Web Bulb Values
    • Maintenance Free NDIR (Non-Dispersive Infrared) CO2 Sensor

    Includes Sensors (Carbon Dioxide, Temperature and Humidity) and AC Adaptor

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  5. TandD TR-76Ui Carbon Dioxide, Humidity and Temperature  Data Logger

    TR-76Ui

    $499.00

    Indoor Carbon Dioxide Data Logger


    • Measures and Records Carbon Dioxide (CO2), Temperature and Humidity in Indoor Environments
    • 0 to 5,000 ppm (CO2), 0°C to 45°C (Temp) and 10 to 90% RH (Humidity) Measurement Ranges
    • Programmable Alarms and Contact Closure Output
    • Large LCD Display will Cycle Through all Three Measurements
    • Perfect for Air Quality Monitoring and IAQ Auditing

    Includes Sensors, Software, (4) AA Alikaline Batteries, USB Cable and AC Adapter

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  6. Reed Instruments SD-9901 Indoor Air Quality Meter w/ SD Card Data Logging

    SD-9901

    $985.50

    Indoor Air Quality Meter w/ SD Card Slot for Data Logging


    • Simultaneously Measure Readings from 3 Separate Probes (Temp/RH, CO2, CO or O2)
    • Recorded Data Logs to SD Card with Easy Analysis Using Microsoft® Excel®
    • 2 Seconds to 8 Hour User-Selectable Sampling Rate
    • LCD Display Shows Current Readings, Max and Min Readings, Alarm and Battery Status
    • 35 Hrs to 120 Hrs of Typical Battery Life (Dependant Upon Environment, Display and Sampling Rate)
    • Powered by (6) AA Alkaline User-Replaceable Batteries

    Includes Temp/RH, CO2, CO and O2 Sensors and Hard Carrying Case

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  7. Extech SD800 Carbon Dioxide (CO2), Humidity and Temperature Data Logger with SD Card Slot

    SD800

    $419.99

    CO2 Humidity and Temperature Data Logger


    • Carbon Dioxide, Temperature and Humidity Measured and Recorded onto SD Card
    • 0 to 4,000 ppm (CO2), 0°C to 50°C (Temperature) and 10 to 90% (Humidity) Measurement Range
    • Stores up to 2 Million Readings Directly onto 2GB SD Card (No Software to Install)
    • Sampling Rate of 5 Seconds to 10 Minutes
    • LCD Display Shows Current Carbon Dioxide (CO2), Temperature and Humidity Readings

    Note: The AAA Batteries is NOT Designed to Operate the Data Logger, It is Designed to Support the Memory (Data Storage) in the Event of a Power Failure.

    Includes 2GB SD Card, Mounting Bracket, (6) AAA Batteries and Universal AC Adapter

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  8. Extech CO210 Desktop Air Quality Monitor

    CO210

    $305.99

    Desktop Air Quality Monitor and Data Logger


    • Measures and Records Carbon Dioxide (CO2), Ambient Air Temperature and Humidity
    • LCD Display Shows Current Levels, Date/Time and CO2 Min/Max Values
    • Stores up to 15,999 Total Readings (5,333 Temperature, Humidity and Carbon Dioxide Readings)
    • Automatic Baseline Calibration (min CO2 Level over 7.5 Days) of Manual Calibration in Fresh Air
    • User Programmable High and Low Alarm Settings for CO2 With Visual and Audible Alert When Met

    Includes Universal AC Adapter, USB Cable and PC Software

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  9. Extech CO260 Indoor Carbon Dioxide, Carbon Monoxide, Humidity, Temperature, Dew Point and Wet Bulb Data Logger

    CO260

    $699.99

    Extech Indoor Air Quality CO/CO2 Data Logger


    • Measures Carbon Dioxide (CO2), Carbon Monoxide (CO), Humidity, Air Temperature, Wet Bulb & Dew Point
    • LCD Display Shows Current Levels, Facial Icon Indicating Quality Levels and Date/Time
    • Audible High/Low Alarms, Automatic Baseline Calibration Function
    • Calculates Statistical Weighted Averages, Dew Point and Web Bulb Values
    • Built-in Maintenance Free NDIR (Non-Dispersive Infrared) CO2 Sensor

    Includes (4) AA Batteries, USB Cable, PC Software and Hard Carrying-Case

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  10. AEMC 2138.09 Indoor Air Quality Monitor and Data Logger

    2138.09

    $502.55

    Indoor Air Quality Monitor and Data Logger (White)


    • Measures and Records Carbon Dioxide (CO2), Temperature and Humidity
    • Data is Downloaded to a Computer with USB Cable or Wirelessly with Bluetooth
    • Stores up to 1 Million Measurements
    • Includes Air Quality Report Software for Data Processing and Generating Reports
    • User Programmable High and Low Alarm Settings for CO2 With Visual and Audible Alarms

    Includes Hard Carrying Case, USB to Wall Plug Adapter, 6ft USB Cable, (2) AA Batteries, Air Quality Report Software (AQR), Quick Start Guide and User Manual

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MicroDAQ.com offers a wide selection of carbon dioxide monitors with data logging capabilities. The CO2 data logging devices can be stand alone or with the ability to also measure other environmental parameters using wireless or Wifi.