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HOBO MX2308 Temp/RH/PAR Data Logger

Measures: Temperature, Relative Humidity & Photosynthetically Active Radiation (PAR)

High-precision monitoring of PAR, temperature, and humidity with Bluetooth data offload. Ideal for agriculture, greenhouse operations, hydroponics, and academic research.

Product Overview

Rugged and Bluetooth-enabled, the MX2308 delivers research-grade monitoring. It integrates with the LI-COR 190R PAR sensor, widely used in scientific research for accurate light measurement.

Key Features

  • Measures Temperature, Relative Humidity, and PAR
  • Bluetooth data transfer (up to 100 ft range)
  • Works with free HOBOconnect mobile and desktop app
  • Integrates with LI-COR 190R PAR sensor
  • Supports LI-COR Cloud IoT platform

Product Brochure

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Benefits

Bluetooth Enabled

Wireless Bluetooth data offload for fast logger setup and download via phone or tablet (up to ~100 ft range)

High-Accuracy PAR

Integrated LI-COR PAR sensor delivers research-grade light intensity readings for sunlight and grow lights.

Temperature & RH

Integrated monitoring of temperature and humidity enables VPD calculation for full climate insight.

Rugged Design

IP67/NEMA 6 weatherproof housing designed for greenhouses, chambers, and outdoor environments.

Long Battery Life
User-replaceable battery lasts up to 2+ years with large memory for long-term deployments.
Alerts & Alarms
LED alerts and HOBO connect threshold notifications help detect out-of-range conditions instantly.

Easy Deployment

Set up in minutes, configure via app, and retrieve data wirelessly without a laptop in the field.

Specifications

Specifications

🌡️ Temperature Sensor
Range -40 to 65 °C (-40 to 149 °F)
Accuracy ±0.2 °C (typical) within -40 to 65 °C
Resolution 0.008°C (0.014 °F)
Drift <0.01°C per year
💧 Relative Humidity (RH)
Range 0 to 100% RH, -40° to 65 °C
Accuracy ±2.5% from 10% to 90% (typical); Max ±3.5%
Resolution 0.01% RH
☀️ LI-COR® PAR Sensor (LI-190R)
Measurement Range 0 to 3,000 μmol/m²/s (Full Sunlight)
Spectral Range 400–700 nm (PAR waveband)
Accuracy ±5% typical (LI-COR factory calibration)
Cosine Correction Up to 82˚ angle of incidence
Cable Length 1.8 m (5.9 ft)
Calculated Metrics:
Accumulated PAR (mol/m²), Daily Light Integral (DLI), Vapor Pressure Deficit (VPD) in kPa, and Dew Point.
📟 Logger Specifications
Transmission Bluetooth Low Energy (Smart); ~30.5m (100ft) range
Logging Rate 1 second to 18 hours
Memory 195,000 measurements (max)
Battery 2/3 AA 3.6V Lithium (User Replaceable); 2-5 year life
Durability NEMA 6 and IP67 Environmental Rating

Applications

Applications

🌱 Ideal Monitoring Applications
🚜

Agricultural Operations

High-precision monitoring of PAR, temperature, and humidity to optimize crop growth and environmental conditions in diverse agricultural settings

🌿

Greenhouse Climate Control

Utilize integrated sensors to calculate Vapor Pressure Deficit (VPD) , providing a complete view of greenhouse climate conditions for better irrigation and ventilation management.

🎓

Academic Research

Integrated LI-COR PAR sensor delivers research-grade light intensity readings , making it the standard choice for university programs and environmental studies

📦

Growth Chambers & Indoor Grow

Rugged IP67/NEMA 6 design stands up to humid and dusty environments found in vertical farms and grow chambers, supporting flexible, wire-free deployment

 

 

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