Onset Temperature, RH, Solar Radiation, Soil EC/VWC Data Logger

An all-in-one, research grade, multi-parameter microclimate monitoring solution with effortless Bluetooth data offload that delivers root-zone insights through the measurement of global solar radiation, temperature, relative humidity (RH), volumetric water content (VWC), and soil electrical conductivity (EC).

• Wireless Bluetooth data offload
• Research grade solar radiation measurements
• Integrated temperature and RH monitoring
• Rugged, weather-proof design
• Long battery life and memory
• Alarms and alerts
• Easy deployment

This all-in-one device captures a comprehensive climate picture, describing the root-zone conditions that most directly influence water uptake, nutrient movement, plant stress, and irrigation decisions. VWC indicates whether the root zone has enough water. Soil EC indicates whether dissolved salts in that water are becoming too concentrated. Combining an external LI-200R Pyranometer (measuring total solar irradiance in the 400 to 1100 nm range) and LI-300 Soil Moisture Sensor, along with built-in temperature and RH sensors, this multi-parameter logger enables the calculation of critical metrics such as accumulated solar radiation (MJ/ m²), daily light integral (DLI of Solar, MJ/m²/day), vapor pressure deficit (VPD, kPa), EC, VWC, and dew point.

This logger pairs research grade sensing of multiple growing parameters with wireless convenience, integrating the renowned LI-COR LI-200R Pyranometer and the LI-300 and LI-350 Soil Moisture Sensors that deliver key measurements with scientific grade accuracy (calibration uncertainty of ±3% typical).

Users can mount the sensor in the field, and setup and data retrieval are seamlessly simple, with no cables or additional download devices needed using the free HOBOconnect app on a phone or tablet. Effortlessly configure the logger and download data via Bluetooth (up to a 100' range), which allows deployment and downloading data from hard-to-reach spots.

Expand remote monitoring by adding an MX Data Plan, which allows data uploads to LI-COR Cloud remote software for further analysis, sharing, and more.

Ordering information: Requires a compatible mobile device or Windows computer and the HOBOconnect app. For mounting, an M-PLT and 2003S leveling fixture are required. Mounting to poles or pipes require an M-BRK and 2003S.