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Onset HOBO Data Logger Monitors Water Level Via Bluetooth

Wireless Solution for the Water Market

CAS DataLoggers has partnered with ONSET™ to provide the HOBO Bluetooth Water Level Data Logger. These water data loggers are ideal for environmental consultants, municipal water authorities, and researchers. The collected data is instrumental in water quality studies, hydrologic applications, environmental impact studies, climate research, and more.

Water Level Monitoring

With over 2.5 million HOBOs sold, Onset data loggers are popular for their ease of use and low price point. Additionally, all HOBO outdoor data loggers are sealed for maximum protection.
The HOBO MX 2001 Water Level Data Logger is used for monitoring changing water levels in a wide range of applications, including in streams, lakes, wetlands, tidal areas, and groundwater. This Bluetooth Low Energy-enabled logger is designed for convenient wireless communication with a mobiOnset HOBO MX2001 Bluetooth Water Level Data Loggerle device.

MX 2001 Product Overview

  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Direct-read cable connects sensor to top-end logger/transmitter
  • Integrated barometric pressure sensor enables direct water level readout
  • Reference water level can be entered at the start of the deployment
  • Uses the HOBOmobile App on iOS devices for setup, data viewing and data sharing
  • Powered by two user-replaceable AA batteries in the top-end unit
  • Several logging modes: normal, multi-rate logging and burst-logging
  • Available with stainless steel or titanium sensor ends

The MX2001 water data logger features a durable ceramic pressure sensor, durable housing, and an integrated barometric pressure sensor for barometric compensation in the logger, which allows for direct water level readout without needing to do any post-processing. An optional cap is also available for deployment in existing wells or stilling wells. Without cumbersome vent tubes or desiccants to maintain and featuring convenient data retrieval to a phone or tablet, this easy-to-use logger is ready to be rolled out in a variety of water applications.

The MX2001 data logger operates in outdoor and underwater environments and supports the following measurements: Absolute Pressure, Barometric Pressure, Differential Pressure, Water Level and Water Temperature.

*This product requires the Onset HOBOmobile app (available on iTunes) and a Direct Read Cable.

Go Wireless with the HOBOMobile App

Using Onset’s HOBOmobile® app, you can easily configure the logger and read it out—all from its deployed location—to your phone or tablet! From there you can view the logged data or share it for further analysis.
With HOBOmobile, you can also set a reference water level and water density, configure up to 8 logging intervals, log statistics, set an alarm to trip at thresholds you specify, or set up burst logging in which data is logged at a different interval when sensor readings are above or below certain limits.

HOBO Benefits

  • Low-cost for maximum spatial coverage
  • Portable and easy to deploy
  • Reusable
  • Research-quality performance

For more information on the HOBO™ MX2001 Bluetooth Water Level Data Logger, additional Onset Data Loggers, or to find the ideal solution for your application-specific needs, contact a CAS Data Logger Applications Specialist at (800) 956-4437 or visit our website at