Onset Computer Corp.

• Measures Conductivity, Salinity, Temperature, Depth or Dissolved Oxygen
• Fully Submersible and Retrieve for Data Offload Using HOBOconnect App
• Wireless Bluetooth Communications for Setup, Configuration and Data Offload
• Guided Calibration for Accurate Data and Water Detect Feature 
• User-Replaceable Lithium Batteries

Requires W-CT Conductivity and Temperature, W-CTD Conductivity, Temperature and Depth or W-DO Dissolved Oxygen Sensor. 

• Measures Conductivity, Salinity, Temperature and Barometric Pressure (Depth)
• Data Logger Remains Above the Water and Cables and Sensors Extend into Fresh or Salt Water
• Wireless Bluetooth Communications for Setup, Configuration and Data Offload Using HOBOconnect App
• Guided Calibration for Accurate Data and Water Detect Feature 
• User-Replaceable Lithium Batteries
• Interchangeable Sensors for Dissolved Oxygen (W-DO) and Conductivity (W-CT)

Requires W-CT Conductivity and Temperature, W-CTD Conductivity, Temperature and Depth or W-DO Dissolved Oxygen Sensor.

• Non-contact Sensor Minimizes Drift-Related Measurement Errors
• Features Open Access to Sensor for Cleaning and Software-Based Drift Compensation
• Software Enables Start/End-Point Calibration to Compensate for Fouling and Easy Conversion to Specific Conductance and Salinity
• 0 to 15,000 µS/cm (Conductivity Extended Range) and 0°C to 40°C (Temperature) Measurement Ranges
• 3 Year Battery Life with Factory Replaceable Battery
• Stores at Least 14,400 Sets of Measured Readings
• Requires HOBOware Pro Software (Version 3.2+) and BASE-U-4 Optical Base Station

Designed for Fresh Water Sources. See the Onset U24-002-C for Saltwater Sources

• Non-contact Sensor Minimizes Drift-Related Measurement Errors
• Also Features Open Access to Sensor for Cleaning and Software-Based Drift Compensation
• Software Enables Start/End-Point Calibration to Compensate for Fouling and Easy Conversion to Specific Conductance and Salinity
• 5,000 to 55,000 µS/cm (Conductivity Extended Range) and 5°C to 35°C (Temp) Measurement Ranges
• 3 Year Battery Life with Factory Replaceable Battery
• Stores at Least 14,400 Sets of Measured Readings
• Requires HOBOware Pro Software Download (Version 3.2+)

Designed for Saltwater Sources. See the U24-001 for Fresh Water Sources

• Measure and Log Water Level, Barometric Pressure and Temperature Readings at a Depth up to 13, 30 or 100ft
• A non-Vent Tube Design Allows for Easy Deployment
• (8) User-Defined Logging Intervals Over an 1 Second to 18 Hour Sampling Rate
• Stainless Steel Housing with Lightning Protection Shields Electronics
• Factory-Replaceable 5-Year 2/3 AA Lithium Battery

Includes (2) U20 Water Level Data Loggers, Shuttle Data Transporter (U-DTW-1), Carrying Case (U20-CASE) and HOBOware Pro Software (BHW-PRO-DLD)