Onset Computer Corp.

• 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

• Measure and Log Water Level (Pressure) and Temperature Readings
• -20°C to 50°C Temperature Measurement Range with ±0.44°C Accuracy
• Factory-Replaceable 2/3 AA 3.6 Volt Lithium Battery with 5 Year Life @ 1 Minute Sampling Rate
• No-Vent-Tube Design for Easy Reliable Deployment and Durable Ceramic Pressure Sensor
• Available in 0 to 13 ft, 0 to 30ft, 0 to 100ft and 0 to 250ft Water Depth Ranges and Stainless Steel or Titanium Housing

Requires HOBOware Pro Software (Version 3.2+) and an Optic USB Base Station (BASE-U-4) or Shuttle Data Transporter (U-DTW-1)

• Recording Changing Water Level (Depth) and Temperature in Wet or Water Environments
• -20°C to 50°C Temperature Measurement Range with ±0.44°C Accuracy
• Factory-Replaceable 2/3 AA Lithium Battery with 5 Year Life (1 Minute Sampling Rate)
• Stores up to 21,700 Measured Readings with Date/Time Stamp
• 0 to 13 ft, 0 to 30 ft and 0 to 100 ft Water Level Ranges Available with ± 0.1% RF Accuracy

Requires HOBOware Pro Software (Version 3.2+) and an Optic USB Base Station (BASE-U-4) or Shuttle Data Transporter (U-DTW-1)

• Integrated Sensors for Temperature and Humidity Measurements in an Indoor Environment
• -20°C to 70°C and 1% to 95% RH Measurement Ranges with a ±0.21°C and 2.5% RH Accuracy
• LCD Display Shows Current Readings, Alarm, Battery and Operating Status
• Stores up to 84,650 Measured Temperature Readings with Date/Time Stamp
• User-Replaceable CR-2032 Lithium Coin Cell Battery with 1 Year Life (1 Minute Sampling Rate)

Requires Type A to Mini B Standard USB Cable (CABLE-USB), HOBOware (Free Download Version) or HOBOware Pro (Paid Download Version) Software.

• -20°C to 70°C (Air) 0°C to 50°C (Water) Temperature Measurement Range
• 0 to 320,000 Lux (0 to 30,0000 Lumens/ft2) Light Measurement Range
• 1 Year User-Replaceable Coin Cell Lithium Battery
• Waterproof Housing for Use in Outdoor or Condensing Environments Up to 30 Meters (100 ft)
• High and Low Alarm LED Indicators
• Stores up to 52,000 Recorded Readings

Requires Optic USB Base Station (BASE-U-4) and HOBOware (Free Download Version) or HOBOware Pro (Paid Download Version) Software.

• Internal Temperature and Humidity Sensors
• -40°C to 70°C Temperature Measurement Range with ±0.2°C Accuracy
• 0 to 100% RH Measurement Range with ±2.5% RH Accuracy
• 3 Year User-Replaceable 1/2 AA 3.6 Volt Lithium Battery
• Stores up to 42,000 Recorded Temperature Readings
• Weatherproof Housing for Use in Outdoor or Condensing Environments

Requires Communication Device BASE-U-4 Optic USB Base Station or U-DTW-1 Waterproof Shuttle (U-DTW-1 Requires HOBOware PRO BHW-PRO-DLD)

• (2) External Sensor for Temperature Measurements in an Outdoor Environment
• Wireless Transmission of Recorded Readings to Phone or Tablet Using Bluetooth Smart LE Communications
• -40°C to 100°C Measurement Ranges with a ±0.2°C (0°C to 70°C) Accuracy
• User-Replaceable Lithium Battery with 2 Year Typical Life (1 Minute Sampling Rate)
• Stores up to 84,650 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available

Includes (2) Temperature Sensors, Screws and Zip Ties for Mounting. HOBOconnect App Available on the Apple Store (iOS) and Google Play (Android)