The HOBO MX2200 Series water temperature loggers bring convenient wireless setup and download to Onset's field-proven TidbiT and Pendant water temp loggers! These models feature the power of Bluetooth to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device, or Windows computer! 

With their rugged case design, expanded memory, and both temperature and temperature/light models, these loggers are ideal for measuring temperature in streams, lakes, oceans, and soil environments.

Onset's HOBO MX2200 Bluetooth Data Logger on a Lobster Trap
Onset's HOBO MX2200 Bluetooth Data Logger
HOBO MX2200 exploded view


Easy logger setup & data management

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Easy logger setup & data management


Customize logger settings and alarms with flexible configuration


Save time with bulk download of data from loggers


Instantly graph and view logger data for easy trend analysis`


Improve collaboration by sharing data via text and email

Phone screen view on HOBOconnect monitoring app showing data logger configurations
View of phone screen showing data downloaded from HOBO data loggers using HOBOconnect mobile data monitoring app
View of graph of data from loggers depicted by HOBOconnect mobile data monitoring app on phone
Mobile phone screen view of HOBOconnect mobile remote monitoring app exporting and sharing data loggers information

Choice of Models


Part Number MX2201 MX2202 MX2203 MX2204
Price USD $63 USD $80 USD $139 USD $150 USD
Measurement Temperature Temperature/Light Temperature Temperature
Data Offload Bluetooth (BLE) Bluetooth (BLE) Bluetooth (BLE) Bluetooth (BLE)
Depth Rating 100 ft 100 ft 400 ft 5000 ft
Battery 1 to 2 year, user-replaceable 1 to 2 year, user-replaceable 3 to 5 year, user-replaceable 3 to 5 year, non-replaceable
Memory 96k 96k 96k 96k


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Frequently Asked Questions

No, the MX2200 Series need to be taken out of the water to download the data.

No, but you do need to have a mobile device such as a phone or tablet that runs iOS or Android operating systems and has Bluetooth 4.0 or above, or a computer running Windows 10, in order to download the data.

With the MX2203 and MX2204, you have the option while configuring the loggers to select Bluetooth Off Water Detect. The logger will not advertise when the presence of water is detected. Once the logger is removed from the water, advertising will automatically turn on, thereby not requiring you to push a button (or use a magnet) to wake up the logger when you need to connect to it. This option preserves some battery power. Note: The logger will check for the presence of water every 15 seconds when this is option is selected

No, we will continue to support the TidbiT, Pendant, and Water Temp Pro optical products, although we encourage folks to take a look at the new features of the MX2200 Series.

You have the ability to share a .HOBO file via email, or use to then open up the file in HOBOware to do additional data analysis, like combining graphs and analyzing your data further. Note that HOBOconnect can also directly output a .XLSX & .CSV file format if you choose to work in Excel.