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Data Loggers

HOBO Micro Station Data Logger - H21-002

4 Smart Sensor Inputs

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IMPORTANT: The HOBO H21-002 Micro Station requires HOBOware software and part # ADAPT-SER-USB interface cables. See compatible items below.

Accurately monitor outdoor weather conditions with the HOBO Micro Station. This rugged data logger starts at $231 and is popular because of its compact size. It accepts up to four plug-and-play smart sensors, and has over 500k of nonvolatile flash data storage. The Micro Station can run up to 1 year on four standard AA batteries. 

  • NEW! Improved weatherproof enclosure for harsh environments

  • Optional analog and pulse inputs for 3rd-party sensors

  • Battery-powered for up to a year - no solar panels required

  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis. 


The H21-002 Data Logger is for use in Indoor and Outdoor environments

The H21-002 Data Logger supports the following measurements (sensors sold separately):


Operating Range: -20° to 50°C (-4° to 122°F) with alkaline batteries, -40° to 70°C (-40° to 158°F) with lithium batteries
Sensor Inputs: Up to four smart sensors (including multiple-parameter sensors)
Communication: 3.5 mm serial port
Dimensions: 8.9 cm H x 11.4 cm D x 5.4 cm W (3.5 x 4.5 x 2.125 inches)
Weight: 0.36 kg (0.8 lb)
Memory: 512K nonvolatile flash data storage
Memory Modes: Stop when full, wrap around when full
Operational Indicators: Seven lights provide logging and sensor network status
Logging Interval: 1 second to 18 hours, user-specified interval
Battery Life: 1 year typical use (up to 4 sensors with 1 minute or longer logging
Battery Type: Four standard AA alkaline batteries included (for operating conditions -20° to 50°C [-4° to 122°F]); optional AA lithium batteries available for operating conditions of -40° to 70°C (-40° to 158°F)
Time Accuracy: 0 to 2 seconds for the first data point and ±5 seconds per week at
25°C (77°F)
Data Type: Supports measurement averaging based on availability of
supporting data from sensor
Logger Start Modes: Immediate, push-button, or delayed start options
Data Communication: Current reading while logging, offload while logging, or offload
when stopped
Environmental Rating: Weatherproof, with GoreTM Vent for deployment in harsh weather conditions 
Mounting: Mount vertically on flat surface 18 cm (3.5 inches) or wider; optional mast mounting kit for use on 4.1 cm (1 5/8 inches) diameter masts
Enclosure Access: Cover secured by four screws
Sensor Network Cable Length: 100 m (328 ft) maximum

Producing Area:USA

Temperature, Relative Humidity, 4-20mA, Amp Hour (Ah), Barometric Pressure, DC Voltage , Kilowatt Hours (kWh), Leaf Wetness, Light Intensity, Power Factor (PF), Pulse Input, Rainfall, Soil Moisture, Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour, Volt-Amps (VA), Water Flow, Watt Hours (Wh), Watts (W), Wind

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