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Onset HOBO MX1102A Carbon Dioxide, Humidity and Temperature Data Logger

Onset HOBO MX1102 Bluetooth Carbon Dioxide, Humidity and Temperature Data Logger

Part Number: MX1102A

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  • Integrated Sensors for Carbon Dioxide, Humidity and Temperature Measurements in an Indoor Environment

  • Wireless Transmission of Recorded Readings to Android devices, iPhone, iPad Using Bluetooth Smart LE Communications

  • 0 to 5000ppm, -20°C to 70°C and 1% to 70% RH Measurement Ranges with a ±50ppm, ±0.21°C and 2% RH Accuracy

  • (4) User-Replaceable AA Alkaline Batteries with 6 Month Life (5 Minute Sampling Rate)

  • Stores up to 84,650 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available

Includes Command Strip, Double-Sided Tape, Hook & Loop Strap and (4) AA Alkaline Batteries. HOBOmobile App Available on the Apple Store and Google Play


  • Answer:

    Calibrating the CO2 sensor can be done a few different ways.  There is a manual calibration as well and auto calibration options available from within the software.

    More detailed information on using them can be found on page 7 of the user manual.  The user manual is available on the "manuals and resources" tab of the product page.

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  • Answer:

    The orientation of the logger shouldn't matter as long as the vents for the sensors (located on the face of the logger) aren't blocked.

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