The MX801 + DO and temp Data Logger Kit provides a simple, accurate solution for water quality monitoring in environmental, aquaculture, and laboratory applications.

This kit combines the MX801 multiparameter data logger with the HOBO W-DO Dissolved Oxygen and Temperature sensor. Fully submersible and Bluetooth-enabled, the MX801 allows for fast setup, guided calibration, and wireless data offload via the HOBOconnect app on iOS, Android, or Windows.

Designed for users upgrading from the U26-001 HOBO Dissolved Oxygen Logger—or starting fresh—this kit delivers reliable performance in the field.

Key Features

• Bluetooth 5.0 for fast logger configuration and data offload
• Fully submersible design (<2″ diameter) for easy deployment
• Water detect feature confirms when logger leaves the water
• Guided calibration ensures accurate DO and temperature readings
• User-replaceable batteries for long-term monitoring
• The user-replaceable DO cap boasts a lifespan of 2 years or more, ensuring long-term functionality.
• Experience high-accuracy measurements that maintain precision even without calibration.

Need to track additional parameters, like Conductivity or Depth?
No problem— Learn more about the MX800 Multiparameter Data Loggers and configure a customised version HERE >>

Everything you need to get started is included

MX801 Multiparameter Data Logger

Fully submersible, Bluetooth-enabled logger designed for fast setup, guided calibration, and wireless data offload. Supports up to two interchangeable MX800 sensors for flexible monitoring.

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W-DO Dissolved Oxygen & Temperature Sensor

Accurate, easy-to-deploy sensor for measuring dissolved oxygen and temperature in water. Pre-calibrated and compatible with MX801 loggers for plug-and-play monitoring.

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See the MX800 Logger User Guide page for Data Logger and DO Sensor Specifications

View the resource here >>

Download the free HOBOconnect app for your iOS or Android mobile device or Windows computer today.

Onset’s HOBOconnect app, accessed from a free download from the iTunes or Google Play app store, or your pc, makes it quick and easy to configure compatible MX Series data loggers (chart below) and manage the collected data. From your mobile device, tablet, or Windows computer, users can view data in graphs, check the operational status of loggers, share data files and graph images for analysis in Excel, Numbers, and other applications, and store data in the cloud. HOBOconnect also makes it fast and easy to set up audible alarm notifications so users are immediately notified of problems.

Learn more about HOBOconnect >>