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Onset HOBO MX1101 Bluetooth Humidity Data Logger

Onset HOBO MX1101 Bluetooth Temperature and Humidity Data Logger

Part Number: MX1101

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

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

  • -20°C to 70°C and 1% to 90% RH Measurement Ranges with a ±0.21°C and 2% RH Accuracy

  • (2) User-Replaceable AAA Alkaline Batteries with 1 Year Life (1 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 (2) AAA Alkaline Batteries. HOBOmobile App Available on the Apple Store and the Google Play Store


  • Answer:


    The MX1101 isn't compatible with the CX Gateway nor can it be used with external sensors.  The only loggers that can be used with the gateway are the CX series of loggers which unfortunately aren't available with humidity sensors.  The CX line is designed for use in fridge and freezers.

    There has been some talk from Onset about expanding the gateway into their other Bluetooth products however we can't say at this time how long it will be or if it will even work with the existing line of Bluetooth loggers.

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  • Answer:

    The calibration is an optional service that we offer.  It provides you with a certificate showing that the individual logger you purchased was tested and found to be within its specification for accuracy.  The test is carried out by our calibration lab which is accredited ISO 17025:2005.   Calibration is not required and the logger will be just as accurate without it.  Generally speaking you would only purchase this optional service if you were required to by a governing body.  The fee to have the logger tested at a single temperature and humidity point is $96.00 per logger.

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  • Answer:

    Yes, you can set the sample rate/frequency when you configure the logger using the software.  It can be set from between once per second to once per 18 hours.

    The software is available as a free download.

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  • Answer:

    Yes, each logger will show up in the app.  You can only connect to one at a time to download/view data but multiple loggers can be accessed from the same app which is available for free for iOS and Android mobile devices.   You can name each logger to make identifying them easier. 

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