H21-002

The HOBO Micro Station is well-suited for economically monitoring micro-climates for crop or alternative energy applications. The Micro Station has four sensor inputs which accept any combination of Onset's plug-in Smart Sensors.

• Accept Onset's wide range of plug-in smart sensors
• Optional analog and pulse inputs for 3rd-party sensors
• Battery-powered for up to a year - no solar panels required
• Wireless remote communication options

Environment: Outdoor Measurement: Temperature Relative Humidity DC Voltage Soil Moisture 4-20mA Rainfall Leaf Wetness Pressure, Barometric Pulse Light Intensity Wind		Product ID: H21-002 Product Name: Micro Station Product Type: Data Loggers

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

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

Part Number: H21-002

This product meets CE specification EN61326 criterion C for ESD, criterion C for Radiated Immunity, criterion B for Fast Transient, criterion A for Conducted Immunity, and criterion A for Power Frequency Magnetic Fields.

To minimize measurement errors due to ambient RF, use the shortest possible probe cable length and keep the probe cable as far as possible from other cables.