1% CO2 + RH/T Data Logger

1% CO2 + RH/T Data Logger
1% CO2 + RH/T Data Logger
1% CO2 + RH/T Data Logger
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The 1% CO2 + RH/T Environmental Data Logger measures up to 1% (10,000ppm) carbon dioxide, temperature, and relative humidity levels in ambient air. It “wakes up”, take a reading, stores it in memory, and goes back to sleep until the next reading is required.

This environmental data logger is not designed for real-time data acquisition. Instead, it logs CO2 + RH/T with a date and time stamp for downloading later. The logging interval is programmable from 30 seconds to 10 days. Up to 60,000 data points can be stored in built-in, non-volatile memory. This means that your data is not lost even if the batteries are completely discharged.

The logger uses AA batteries. Taking one reading every 30 minutes, it can record IAQ levels for approximately 2 months. This makes it useful for commercial HVAC analysis.

Free Easy-to-use GasLab® Software

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

Download Latest Software Here

Optional Hydrophobic Vent Filter Kit

For high-humidity environments, these hydrophobic filters cover the inside vents to allow air flow but keeps out humidity that affects the sensor. Easy to install, each kit contains a set of filters for 1 unit. Click here to order.


  • CO2 Measurement: non-dispersive infrared (NDIR)
  • Measurement Range: 0 – 10,000 ppm (0-1%)
  • Sampling Method: diffusion
  • Data logging: 30 seconds to 10 days sampling interval
  • Accuracy: ± 30ppm ± 3% of measured value
  • Memory: 60,000 log entries maximum, includes date & time stamp, CO2, Temp, %RH
  • Sensor Life Expectancy: > 15 years
  • Maintenance Interval: no maintenance required
  • Size: 5.75×5.6×1.3in (146×91×33mm)


  • Rechargeable Lithium Ion Battery Pack (CM-0212)
  • AA Batteries (CM-0018AA)
  • USB Cable or Wall Adapter for long-term operation

Included Accessories

  • 120/220 VAC adapter (some models)
  • International Wall adapter kit
  • USB Cable
  • Manual

System Requirements

  • Windows XP SP2 or newer
  • Microsoft .Net 4.5 Run time Libraries


  • 1 Year

Data Sheet (pdf)

co2 data logger Manual (pdf)

Dimensional Drawing (pdf)