HOBO MX2310 Wireless Air Temp, Humidity, PAR, Soil EC/VWC/Temp Data Logger - Optional Remote Monitoring
High-precision monitoring of Photosynthetically Active Radiation (PAR), temperature, RH, and Soil EC/volumetric water content with effortless Bluetooth data offload, ideal for comprehensive monitoring of root-zone conditions.
Ideal for greenhouses, vertical farms, growth chambers, and other controlled environment agriculture (CEA) applications.
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 (Outdoor Unit) | Battery only |
|---|---|
| Batteries (Outdoor Unit) | 2/3 AA 3.6 Volt lithium (included). User-replaceable. |
| HOBO Product Series | MX2300 |
| Measurements | Dew Point, Humidity, PAR/Quantum Light, Soil Electrical Conductivity (EC), Soil Moisture, Soil Temperature, Temperature |
| Data Available By | Online, Mobile App, WiFi, Email, Ethernet, Wireless (Bluetooth/RF) |
Temperature Sensor
Range
-
-40 to 70°C (-40 to 158°F)
Accuracy
-
±0.2 °C (typical) within -40 to 70 °C
Resolution
-
0.008°C (.014 °F)
Drift
-
<0.01°C (0.018°F) per year
Response Time* Without Solar Radiation Shield
-
17 minutes in air moving 1 m/sec
Response Time* With Solar Radiation Shield
-
24 minutes in air moving 1 m/sec
Relative Humidity (RH) Sensor
Range
-
0 to 100% RH, -40° to 70 °C exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%
Accuracy
-
±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% RH and above 90% RH ±5% typical
Resolution
-
0.01% RH
Drift
-
<1% per year typical
Response Time* Without Solar Radiation Shield
-
30 seconds in air moving 1 m/sec
Response Time* With Solar Radiation Shield
-
40 seconds in air moving 1 m/sec
Calculated Metrics
-
Vapor Pressure Deficit (VPD) in kPa, and Dew Point (computed from logged data)
Photosynthetically Active Radiation (PAR)
Range
-
0 to 3,000 μmol/m²/s (full sunlight)
Accuracy
-
±5% typical (LI-COR LI-190R factory calibration)
Offset
-
+/-1 μmol
Resolution
-
0.1 μmol/m²/s
Spectral Range
-
400–700 nm (PAR waveband)
Linearity
-
Maximum deviation of 1% up to 3,000umol/m2/s
Stability
-
<= 2% change over one year
Soil Moisture: Volumetric Water Content (VWC)
Measurement Range (select one at configuration)****
-
0.00 to 1.0 m³/m³ VWC in mineral soils
0.00 to 1.0 m³/m³ VWC in soilless media
Apparent Dielectric Permittivity: 1 (air) to 80 (water)
Accuracy
-
±0.03 m³/m³ typical
±0.06 m³/m³ maximum
Apparent Dielectric Permittivity: ±1 Ɛa
Resolution
-
0.001 m³/m³
Apparent Dielectric Permittivity: 0.002 Ɛa
Dielectric Measurement Frequency
-
70 MHz
Volume of Influence
-
1400 ml
Percent of Field Capacity (for VWC measurements only)
-
Range: 0 to 200%
Resolution: 0.1%
Soil Temperature*****
Measurement Range
-
-40 to 70°C (-40 to 158°F)
Accuracy
-
±0.5°C from -40° to -20°C
±0.3°C from -20°C to 70°C
Resolution
-
0.1°C (0.18°F)
Soil Bulk Electrical Conductivity (EC)
Measurement Range
-
0 to 20000 µS cm-1
Accuracy
-
±5 % from 0 to 10000 µS cm-1
±8 % from 10000 to 20000 µS cm-1
Resolution
-
1 µS cm-1
Logger
Operating Range
-
-40 to 70°C (-40 to 158°F)
Radio Power
-
1mW (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 is 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; 4 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
-
195,000 measurements, maximum
Full Memory Download Time
-
Approximately 4-5 minutes; 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 (only): 4.6 × 4.6 × 10.9 cm (1.81 × 1.81 × 4.31 in)
Soil moisture sensor needle length: 5.4 cm (2.14 in)
Soil moisture sensor needle diameter: 0.40 cm (0.16 in)
Sensor cable length: 2 m (6.56 ft)
Weight (Unpackaged)
-
333 g11.8 oz
Weight (Packaged)
-
490 g(17.3 oz
Materials
-
Acetal, silicone gasket, stainless steel screws
Soil Moisture Sensor: ASA plastic body with polyurethane epoxy filling and stainless-steel pins
Cable: PVC, UV resistant and rodent repellent (soil moisture sensor cable)
Environmental Rating
-
Logger: NEMA 6 and IP67
Soil Moisture sensor and cable: xxxx
* Typical, up to 90% of change
** Per RH sensor manufacturer data sheet
*** Calibrated against an Eppley Precision Spectral Pyranometer (PSP) under natural daylight conditions. Absolute uncertainty under these conditions is ± 3% typical; ± 5% maximum.
**** 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 HOBOlink. The VWC range will depend on the calibration equation.
***** For additional accuracy, the sensor data can be post-calibrated for a particular soil by applying a calibration equation to the data exported from the app.
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Rugged and Bluetooth-enabled, the MX2310 delivers an all-in-one solution for soil–plant–atmosphere monitoring that provides insights at the root level to inform irrigation and fertilization decisions. Get research-grade photosynthetically active radiation (PAR), temperature and relative humidity—plus soil salinity and volumetric water content measurements, all in a single device. Whether you’re growing plants in a commercial greenhouse, managing indoor vertical farms, fine-tuning conditions in hydroponic systems, or conducting agricultural or ecological research, the MX2310 completes your growing picture, giving you the data you need to optimize conditions for growth, health, and productivity.
Built for simplicity and flexibility, this multi-parameter logger integrates LI-COR® LI-190R PAR and LI-300/350 sensors, trusted by researchers worldwide for its precision in measuring photosynthetically active radiation (PAR).
IMPORTANT NOTE: For mounting, an M-PLT and 2003S Leveling Fixture are required. Mounting to poles or pipes require an M-BRK and 2003S (see Mouniting Accessories above).
What the MX2310 Temp/RH/PAR Logger Supports
Irrigation Timing - Helps determine when to irrigate vs. fixed schedules
Dryback Tracking - Informs greenhouse, cannabis and substrate-based growing operations
Overwatering prevention - High VWC can indicate poor drainage, low oxygen risk, or disease-prone conditions. High VWC can indicate poor drainage, low oxygen risk, or disease-prone conditions. High VWC can indicate poor drainage, low oxygen risk, or disease-prone conditions. Detecting high VWC can indicate drainage issues, low oxygen availability, and disease-prone conditions
Key Features
Wireless Bluetooth Data Offload -Fast, easy logger setup and download via phone or tablet (up to ~100 ft range).
High-Accuracy PAR Measurements - Integrated LI-COR PAR sensor delivers research-grade light intensity readings for both sunlight and indoor grow light conditions
Integrated Temperature & Humidity Monitoring - Logged temperature and humidity alongside solar radiation for a complete view of environmental conditions
Rugged, Weatherproof Design -Durable IP67/NEMA 6 housing stands up to humid, wet, and dusty environments found in greenhouses, growth chambers, or outdoor field sites.
Long Battery Life & Memory -User-replaceable battery lasts up to ~2+ years and ample data storage supports extended deployments.
Alarms and Alerts - See out-of-range conditions with logger's LED readout, and configure threshold alerts using HOBOconnect for proactive monitoring.
Easy Deployment -Users can deploy the logger in minutes, configure logging intervals via the HOBOconnect app, and wirelessly retrieve data (without a laptop) in the field!
Requires a compatible mobile device or Windows computer and the HOBOconnect app.