Onset Computer Corp.

• External Sensors for Soil Moisture and Temperature Measurements
• Wireless Transmission of Recorded Readings to Phone or Tablet Using Bluetooth Smart LE Communications
• 0 to 0.64 m³/m³ (Mineral Soils) and 0 to 0.70m³/m³ (Soilless Media) Measurement Ranges
• User-Replaceable Lithium Battery with 2 Year Typical Life (1 Minute Sampling Rate)
• Stores up to 110,000 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available

Includes Screws and Cable Ties for Mounting. HOBOconnect App Available on the Apple Store (iOS) and Google Play (Android)

• 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

• Integrated Sensors for Temperature and Humidity Measurements in an Indoor Environment
• -20°C to 70°C and 15% to 95% RH Measurement Ranges with a ±0.21°C and 3.5% RH Accuracy
• Stores up to 84,650 Measured Temperature Readings with Date/Time Stamp
• LCD Display Shows Current Readings, Alarm, Battery and Operating Status
• 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.

• External 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)

• Measure and Log Water Level 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 (1) U20 Water Level Data Loggers, Shuttle Data Transporter (U-DTW-1) and HOBOware Pro Software (BHW-PRO-DLD)

• 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)

• (2) External Temperature Sensors
• -40°C to 100°C Temperature Measurement Range with ±0.18°C 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-Wire Interface Senor Suitable for Measuring Mechanical and Electrical Contact Closures
• Up to 1HZ (1 pulse per Second) Measurement Rate for Events
• -20°C to 70°C Temperature 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)

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