HOBO Micro Station Data Logger
The HOBO H21-002 Micro Station requires HOBOware software and part # ADAPT-SER-USB interface cables. See compatible items below.
Overview
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
- Requires HOBOware or HOBOware Pro software for logger setup, graphing and analysis.
- Requires #ADAPT-SER-USB interface cables
In what environment does this data logger operate?
This data logger operates in indoor and outdoor environments.
What measurements does this data logger support?
The H21-002 data logger supports the following measurements: 4-20mA, Amp Hour (Ah), Barometric Pressure, DC Voltage, Kilowatt Hours (kWh), Leaf Wetness, Light Intensity, Power Factor (PF), Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Volt-Amp Reactive, Volt-Amp Reactive hour, Volt-Amps (VA), Water Flow, Watt Hours (Wh), Watts (W) and Wind
The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.
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 interval)
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; tested to NEMA 4X and IP66.
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

The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.
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Detailed Specifications
HOBO Micro Station Data Logger
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 interval)
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; tested to NEMA 4X and IP66.
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