Starting at $620.00

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  • Cloud-based data access through HOBOlink
  • Inputs for 5 plug-and-play smart sensors
    • Optional 6th input for water level sensor
  • Set up both system and sensor alarms
  • Integrated mounting tabs for screws, zip ties, or U-bolts
  • Weatherproof IP66, NEMA 4X enclosure

What's in the Box

  • Grease packet
  • Cable ties
  • Screws and washers

The HOBO MicroRX station data logger provides continuous logging for a broad range of weather monitoring and microclimate applications. With the optional water level sensor and integrated flow conversion you can monitor streams, lakes, wetlands, tidal areas, groundwater, and more. Logged data from the station is transferred at regular connection intervals to HOBOlink web-based software where you can check the latest conditions, view graphs, configure sensors and alarms, set up a dashboard, download your data, or schedule data delivery via email or FTP.

Inside its weatherproof enclosure, this compact station has a built-in LCD screen to check the current system configuration and status, start and stop logging, add and remove smart sensors, and connect to HOBOlink on demand.

The RX2100 data logger supports the following measurements: Absolute Pressure, 4-20mA, AC Current, AC Voltage, Amp Hour (Ah), Barometric Pressure, DC Voltage, Evapotranspiration, Kilowatt Hours (kWh), Leaf Wetness, Light Intensity, PAR, Power Factor (PF), Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Volt-Amp Reactive hour, Volt-Amps (VA), Water Level, Watt Hours (Wh), Watts (W) and Wind.

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

HOBO RX Data Plans
RX remote monitors require a data plan selection in order to function


USB logger-to-PC communications cable, six feet long and coated in black plastic
In Stock
HOBO S-EXT Smart Sensor Extension Cable
Male-to-male extender cable, plus a female-to-female adaptor

Power Supplies

HOBO SOLAR-5W / SOLAR15W Solar Panels
5 Watt and 15 Watt solar panels work with the RX3000, MicroRX, and the U30-NRC, reduce system costs


Please consider these optional accessories.

HOBO 4-20 mA Input Adapter Sensor
Interfaces with any sensor providing a 4-20 mA signal to connect to smart sensor compatible data loggers
In Stock
HOBO Accu-CT Current Transformer
Highly accurate split-core current transformer designed for single handed operation
HOBO MAG-SPT Series AC Potential Transformers
Measures True RMS for accurate readings of sinusoidal and non-sinusoidal waveforms, ranges of 150, 300, 600 Volts AC
HOBO T-VER-E50B2 Power / Energy Meter
True RMS up to the 21st harmonic 60 Hz, One to three phase AC system
HOBO S-BPB-CM50 Barometric Pressure Smart Sensor
Barometric Pressure Smart Sensor for use with the HOBO Remote Monitoring Station Data Loggers
HOBO Voltage Input Adapter Sensor
Digital filtering improves measurement accuracy with 32 readings/sample, 12-bit resolution
In Stock
HOBO Veris Kilowatt Hour 1-Phase / 3-Phase Transducers
300 or 800 amp sensors, split-core installation eliminates the need to remove conductors, accurate electronic pulse output
In Stock
HOBO WNB-3D WattNode 3-Phase Series Transducers
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations, pulse output, use with wide variety of CT's
HOBO WattNode 1 / 2 / 3 Phase Wye kWh Transducer Sensor
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations
HOBO WattNode Branch Circuit Transducer Sensor
Measures up to 3 separate branch circuits simultaneously, accurate measurement of multiple single phase or each phase of 3-phase configurations
HOBO S-LWA Leaf Wetness Smart Sensor
Measurement range: 0 (dry) to 100% (wet), capacitive grid sensor type
HOBO S-LIA Photosynthetic Light Smart Sensor
Photosynthetically Active Radiation (PAR) Smart Sensor, designed to detect photons between 400-700 nm in wave length
HOBO S-LIB Solar Radiation Sensor
Solar Radiation (Silicon Pyranometer) Sensor, measurement range: 0 to 1280 W/m²
HOBO UCC Series Pulse Input Adapters
Connects sensors with pulse outputs to loggers with smart-sensor inputs
In Stock
HOBO UCD Series Contact Closure Input Adapter
Connects sensors with pulse outputs to loggers with smart-sensor inputs, compatible with contact closures
HOBO S-RGA-M002 Rain Gauge Smart Sensor
0.01" Rain Gauge (2m cable) Smart Sensor, measures rainfall rates up to five inches per hour
HOBO S-RGB-M002 Rainfall Smart Sensor
0.2 mm Rainfall (2m cable) Smart Sensor, measures rainfall rates up to 12.7 cm per hour
HOBO 12-bit Temperature/RH Smart Sensors
Temperature and RH measurements
HOBO S-SMC-M005 Soil Moisture Smart Sensor
Sensor uses a high-frequency (70 MHz) circuit that provides good accuracy even in high-salinity and sandy soils.
HOBO S-SMD Soil Moisture Smart Sensor
Measures a large 1-liter volume of soil, providing a more accurate picture of average soil moisture
HOBO TMB Series 12-Bit Temperature Smart Sensors
Temp, and water temp measurements, stainless steel sensor tip and robust cable, 2m, 6m and 17m length options
HOBO T-MINOL-NL Water Flow Meter Sensor
Compact, no-lead water flow meter sensor that measures cold and hot water flow rates, with 59 inch cable length
HOBO S-WCB Wind Monitor Adapter Sensor
Connects the R.M. Young Wind Monitor-AQ Sensor (model 05305) with Onset's line of research-grade weather stations
HOBO S-WCC Marine Wind Monitor Adapter Sensor
Connects the R.M. Young Marine Wind Monitor Sensor (model 05106) with Onset's line of research-grade weather stations
HOBO S-WCG-M003 Ultrasonic Smart Sensor
Ultrasonic wind, speed and direction smart sensor, plug-and-play with HOBO stations
HOBO S-WDA Wind Direction Smart Sensor
Research-grade plug-and-play sensor for measuring and logging wind direction data
HOBO S-WSB Wind Speed Smart Sensor
Measure wind speed from 0 to 76 m/s (0 to 170 mph), sensor survives through 170 mph
HOBO S-WSET-B Wind Smart Sensor Set
Set includes research-grade plug-and-play Wind Speed Smart Sensor and the Wind Direction Smart Sensor
HOBO Compliance Certificate
Compliance certificate states that the individual data logger is in compliance with its specification as described in its product manual
Call for pricing
HOBO S-EXT-CASE2 Weatherproof Extension Housing
6.5-inch long, xenoy weatherproof housing that protects the connection between sensors and sensor extension cables
1, 5, 10, 15, 30, and 60 meter cables available
HOBO MX2001 Water Level Sensors
Water level data logger offers convenient wireless setup and download from mobile devices via Bluetooth Low Energy technology


This product can be used in the following applications: