Data acquisition
The HOBO MX2307A is a robust wireless data logger for simultaneously monitoring soil moisture, electrical conductivity (EC), soil temperature, air temperature and relative humidity. With a single measurement system, you gain insight into both soil conditions and the surrounding microclimate.
The MX2307A is particularly suitable for research, greenhouse applications, agriculture, horticulture and other applications where accurate information on soil and environmental conditions is required.
Using Bluetooth Low Energy, the logger can be easily configured and measurement data can be downloaded wirelessly using the free HOBOconnect app on a smartphone, tablet or Windows computer.
Plant growth is not only influenced by the amount of water in the soil. Temperature, humidity and soil electrical conductivity also play an important role.
The HOBO MX2307A therefore combines multiple measurements in a single system:
This enables you to monitor changes in soil and microclimate conditions over extended periods and analyse the relationship between different environmental parameters.
The MX2307A comes with a pre-connected soil sensor with a 2-metre cable. The stainless steel measurement probes ensure reliable placement and good contact with the soil.
The sensor is suitable for both mineral soils and soilless growing media/substrates. Soil moisture measurements can also be displayed as a percentage of Field Capacity.
Thanks to the logger’s robust IP67 enclosure, the system is suitable for long-term monitoring in demanding outdoor environments.
No physical connection is required to configure or read the logger. Bluetooth connectivity allows you to communicate directly with the logger using the free HOBOconnect app.
The wireless range is approximately 30 metres (line-of-sight) under optimal conditions.
HOBOconnect allows you to:
For applications such as greenhouses, the MX2307A can also be combined with an MX Gateway and an appropriate data plan, enabling remote access to measurement data via LI-COR Cloud.
The HOBO MX2307A is suitable for applications including:
By recording soil and climate parameters simultaneously, the MX2307A provides a more complete picture of the environmental conditions in which plants grow.
Multiple parameters with one logger
Simultaneously measure soil moisture, soil EC, soil temperature, air temperature and relative humidity.
Wireless data access
Easily configure and read the logger via Bluetooth using the HOBOconnect app.
Designed for long-term outdoor monitoring
The robust logger enclosure is IP67 rated and designed for use in demanding environments.
Large memory capacity
Internal memory for up to 195,000 measurements.
Flexible logging intervals
Configurable from 1 second to 18 hours.
Long battery life
Up to approximately 4 years at a 1-minute logging interval when Bluetooth Always On is disabled.
Suitable for different soil types
Suitable for use in both mineral soils and soilless growing media/substrates.
The HOBO MX2307A is supplied with:
Would you like to know whether the HOBO MX2307A is the right solution for your application? Pedak can help you select the right data logger and sensors for your measurement requirements.
In addition to supplying measurement equipment, Pedak can advise you on the design of your measurement system, data collection and professional calibration.
Technical specifications
Technical specifications
Air temperature
Specification Value
Measurement range -40 to +70 °C
Accuracy ±0.2 °C typical
Resolution 0.008 °C
Drift <0.01 °C per year
Relative humidity
Specification Value
Measurement range 0 to 100% RH
Accuracy ±2.5% RH typical from 10 to 90% RH
Resolution 0.01% RH
Drift <1% per year typical
Calculated parameters VPD and dew point
Soil moisture – Volumetric Water Content (VWC)
Specification Value
Measurement range 0.00 to 1.0 m³/m³
Accuracy ±0.03 m³/m³ typical
Resolution 0.001 m³/m³
Sensor frequency 70 MHz
Volume of influence 1,400 ml
Field Capacity 0–200%
Soil temperature
Specification Value
Measurement range -40 to +70 °C
Accuracy ±0.3 °C from -20 to +70 °C
Accuracy ±0.5 °C from -40 to -20 °C
Resolution 0.1 °C
Soil Electrical Conductivity (EC)
Specification Value
Measurement range 0–20,000 µS/cm
Accuracy 0–10,000 µS/cm ±5%
Accuracy 10,000–20,000 µS/cm ±8%
Resolution 1 µS/cm
Data logger
Specification Value
Operating range -40 to +70 °C
Communication Bluetooth Low Energy
Wireless range Approx. 30.5 metres line-of-sight
Logging interval 1 second to 18 hours
Memory Up to 195,000 measurements
Battery Replaceable 2/3 AA 3.6 V lithium battery
Battery life Typically 2–4 years, depending on settings
Logger dimensions 10.8 × 5.08 × 2.24 cm
Soil sensor cable length 2 metres
Weight 263 g
Logger enclosure rating IP67 / NEMA 6
Data acquisition
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