HOBO MX2306 Wireless Soil Moisture Data Logger - Optional Remote Monitoring
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HOBO MX Soil Moisture Data Loggers are the industry’s only low-cost, fully integrated soil moisture loggers with Bluetooth wireless data offload. Available in two models – one that measures soil moisture (HOBO MX2306) and one that measures both soil moisture and temperature (HOBO MX2307) – these loggers are ideal for researchers and growers looking for the accurate data they need to save water, improve crop yields, reduce harmful runoff, and protect ecosystems.
Communications
Access your data directly from your mobile phone, tablet or Windows computer when within 100 foot (30 m) line-of-sight range of the logger, with the free HOBOconnect app.
To enable cloud data storage and analysis, add an MX Data Plan (select from the options above).
To enable near real-time remote monitoring and alerts via email or text message, add an MX Data Plan and an MX Gateway (select from the options above). Note: the MX Gateway must be indoors.
You can download the HOBOconnect app here:
| Power | Battery only |
|---|---|
| Power (Outdoor Unit) | Powered by user-replaceable 2 or 3 AA 3.6 Volt lithium batteries |
| HOBO Product Series | MX2300 |
| Measurements | Soil Moisture |
| Data Available By | Wireless (Bluetooth/RF), Mobile App, Online |
The country of origin for this product is the United States.
| Soil Moisture: Volumetric Water Content (VWC) | |
| Measurement Range* |
0.00 to 0.64 m³/m³ in mineral soils 0.00 to 0.70 m³/m³ in soilless media |
| Accuracy |
±0.031 m³/m³ typical in mineral soils that have solution EC <8 dS/m ±0.051 m³/m³ typical in soilless media |
| Resolution |
0.001 m³/m³ |
| Dielectric Measurement Frequency |
70 MHz |
| Temperature Sensor (MX2307) | |
| Range |
-40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year |
| Accuracy |
±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F) ±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F) ±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F) |
| Resolution |
0.04°C (0.072°F) |
| Drift |
<0.01°C per year (0.018°F per year) |
| Response Time |
3 minutes in air moving 1 m/s; 20 seconds in stirred water 4 minutes in air moving 1 m/s with RS3-B Solar Radiation Shield |
| Logger | |
| Operating Range |
-25° to 60°C (-13° to 140°F) |
| Radio Power |
1 mW (0 dBm) |
| Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard |
Bluetooth Low Energy (Bluetooth Smart) |
| Logging Rate |
1 second to 18 hours |
| Logging Modes |
Fixed interval (normal, statistics) or burst |
| Memory Modes |
Wrap when full or stop when full |
| Start Modes |
Immediate, push button, date & time, or next interval |
| Stop Modes |
When memory full, push button, date & time, or after a set logging period |
| Time Accuracy |
±1 minute per month 0° to 50°C (32° to 122°F) |
| Battery Type |
2/3 AA 3.6 Volt lithium, user replaceable |
| Battery Life |
2 years, typical with logging interval of 1 minute and Bluetooth Always On enabled; 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
| Memory |
110,000 measurements, maximum (472 kB) |
| Full Memory Download Time |
Approximately 60 seconds; may take longer the further the device is from the logger |
| Dimensions |
Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 in.) Soil moisture sensor: 7.5 x 5.1 x 2.4 cm (2.95 x 2.02 x 0.95 inches) Soil moisture sensor needle length: 5.4 cm (2.13 inches) Soil moisture sensor needle diameter: 0.32 cm (0.13 inches) Temperature sensor (MX2307) diameter: 0.53 cm (0.21 in.) Sensor cable length: 2 m (6.56 ft) |
| Weight |
MX2306: 229 g (80 oz) MX2307: 267 g (94 oz) |
| Materials |
Logger: Acetal, silicone gasket, stainless steel screws Soil Moisture Sensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins Temperature Sensor (MX2307): Stainless steel waterproof tip Cable: PVC, UV resistant and rodent repellent (soil moisture sensor cable) |
| Environmental Rating |
Temperature sensor and cable (MX2307): Immersion in water up to 50°C (122°F) for 1 year |
| Compliance Marks | |
* The sensor data can be post-calibrated if necessary (e.g. the sensor is used in non-mineral soil types or higher than standard accuracy is required). Users can apply a calibration equation to the data exported from the app. The VWC range will depend on the calibration equation.
- HOBO MX2306 or HOBO MX2307 Data Logger with 2m cable(s) and attached sensor(s)
- HOBO MX Soil Moisture Logger Quick Start Guide
- Screws
- Cable ties
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With just a mobile phone, tablet, or Windows laptop running Onset’s free HOBOconnect app, users get convenient wireless setup and data download via Bluetooth when within 100 feet of the logger – making it easy to retrieve data from hard-to-access field locations. Add an MX Data Plan for remote access to data in LI-COR Cloud, Onset’s innovative cloud-based software platform.
Key Features
- Ready to deploy, with pre-attached sensors
- Easy configuration and data offload with the free HOBOconnect app
- Durable TEROS 10 soil moisture sensor lasts over 10 years in the field
- For use in both mineral soils and soilless media
- Sturdy, sharp stainless-steel spikes for easy installation and better soil contact
- Option to view data in Percent of Field Capacity
Important Information
HOBO MX2306 & 2307 data loggers require a compatible mobile device or Windows computer and the HOBOconnect app.