Part # H21-USB
HOBO USB Micro Station Data Logger
Important Info
The HOBO H21-USB Micro Station requires a #CABLE-USBMB and HOBOware software.
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Overview
Rugged and compact, the redesigned HOBO USB Micro Station is a weatherproof data logger for multi-channel monitoring of microclimates. Starting at just $240, this battery-powered station accepts up to five plug-and-play Smart Sensors and has a hinged door to make sensor installation simple and quick. The Micro Station is equipped with a built-in USB port for fast, efficient data readout to a computer, and integrated mounting tabs for easy installation.
Looking for a cellular option? The MicroRX Station offers integrated solar panel or battery-power for affordable remote data offload via 4G cellular.
Interested in water level and flow monitoring? The MicroRX Water Level Station combines the MicroRX Station with Onset's own water level sensor and pre-programmed water flow formulas.
- Compact size for easy deployment
- Weatherproof IP66 enclosure for harsh environments
- Direct USB offload--no need for an adapter cable
- Includes five smart sensor inputs
- Hinged door and integrated mounting tabs
- Runs for up to a year on four standard AA batteries
- Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis
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-USB data logger supports the following measurements: 4-20mA, Amp Hour (Ah), Barometric Pressure, DC Voltage, Dew Point, Kilowatt Hours (kWh), Leaf Wetness, Light Intensity, PAR, Power Factor (PF), Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Solar Radiation, 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.
| 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 |
Smart Sensor Connectors |
5 |
| Smart Sensor Data Channels | Maximum of 15 (some smart sensors use more than one data channel; see sensor manual for details) |
Smart Sensor Network Cable Length |
100 m (328 ft) maximum |
Logging Interval |
1 second to 18 hours |
Start Modes |
Immediate, at interval, push button, or delayed start |
Memory Modes |
Stop when full or wrap when full |
Memory |
512 KB nonvolatile flash data storage |
Time Accuracy |
0 to 2 seconds for the first data point and ±5 seconds per week at 25°C (77°F) |
Battery Type |
Four AA 1.5 V alkaline batteries for operating conditions of -20° to 50°C (-4° to 122°F); four AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
Battery Life |
1 year, typical use (up to five sensors with 1 minute or greater logging interval) |
Communication Type |
USB 2.0 interface |
Full Memory Download Time |
4 minutes |
Enclosure Access |
Hinged door secured by one latch with eyelet for use with user-supplied padlock |
Materials |
Outer enclosure: Polycarbonate/PBT blend with stainless steel hinge pins; Gaskets: Silicone rubber; Cable channel: EPDM rubber |
Dimensions |
17.04 x 11.94 x 4.47 cm (6.71 x 4.70 x 1.76 in.) see diagrams in manual Padlock hole diameter: 0.58 cm (0.23 in.) |
Weight |
414g (14.6 oz.) |
Environmental Rating |
Weatherproof enclosure, NEMA 4X and IP66 |
 |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
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Environment
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Sensors
Choose your sensor(s):
AC Current, AC Voltage, Amp Hour, Kilowatts, Power Factor, Reactive Power, Volt-Amp Reactive Hour, Volt-Amps, Watt Hours, Watts
E50B2 Power & Energy Meter Sensor
E50B2 Power & Energy Meter Sensor
Build better energy efficiency and power management with the E50B2 Power & Energy Meter. This cost-effective sensor is simple to deploy and can either be installed on standard DIN rail or be surface mounted. The E50B2 integrates with HOBO RX, UX, U30, ZW, H22, and H21 data loggers.
Items used with T-VER-E50B2
Electronic Switch Pulse Input Adapter - 1 meter Sensor
Electronic Switch Pulse Input Adapter - 1 meter Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
Electronic Switch Pulse Input Adapter - 6 meters Sensor
Electronic Switch Pulse Input Adapter - 6 meters Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
20 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
20 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
50 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
50 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
100 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
100 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
250 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
250 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
5 AMP Mini Split-core AC Current Transformer Sensor
5 AMP Mini Split-core AC Current Transformer Sensor
The small size 5 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms.
20 AMP Mini Split-core AC Current Transformer Sensor
20 AMP Mini Split-core AC Current Transformer Sensor
The small size 20 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
50 AMP Mini Split-core AC Current Transformer Sensor
50 AMP Mini Split-core AC Current Transformer Sensor
The small size 50 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
75 AMP Mini Split-core AC Current Transformer Sensor
75 AMP Mini Split-core AC Current Transformer Sensor
The small size 75 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
100 AMP Split-core AC Current Transformer Sensor
100 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 100 Amp AC Current Transformer or CT (Magnelab part # SCT-1250-100) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...200 AMP Split-core AC Current Transformer Sensor
200 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 200 Amp AC Current Transformer or CT (Magnelab part # SCT-1250-200) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...600 AMP Split-core AC Current Transformer Sensor
600 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 600 Amp AC Current Transformer or CT (Magnelab part # SCT-2000-600) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...T-VER-E50B2 wiring kit Cable
T-VER-E50B2 wiring kit Cable
Wiring kit contains the appropriate wires to connect the HOBO UX120-017 Pulse data logger to the E50B2 Power and Energy Meter and electrical panel.
Single Phase Fuse Kit Cable
Barometric Pressure
Smart Barometric Pressure Sensor
Smart Barometric Pressure Sensor
The Barometric Pressure Smart Sensor has a measurement range of 660 mb to 1070 mb (19.47 to 31.55 inHg), and can perform measurement averaging to obtain the highest accuracy. The operating temperature range for this sensor is -40° to 70°C (-40° to 158°F). This weatherproof smart sensor is mounted outside the data logger enclosure.
Items used with S-BPB-CM50
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Kilowatt Hours
Rogowski Coil Sensor
Rogowski Coil Sensor
Rope CTs are excellent for bus-bars and large switch-gear applications. Self-powered rope CTs are flexible and easy to install, but will not be accurate below 30A. Each CT includes the two-pin CT connector plug.
Technical Specifications
333 mVrms at rated output
Accurate within 1% from 30A to stated current rating
6' twisted pair lead with CT connector
Wide current input range from 5A - 50,000A AC
Note: 30A minimum current required at all times...EG4100 Series Current Transformer Sensor
EG4100 Series Current Transformer Sensor
Split-core CTs from J&D Sensing offer a well constructed hinged body and are accurate to +/-1% from 1%-100% of their stated current rating. The small interval for physical size options (10mm/0.39", 24mm/0.94", and 36mm/1.42") allow for a flexible installation. Each CT size has a hinge and clipping mechanism, making it easy to close the CT in tight situations.
E50B2 Power & Energy Meter Sensor
E50B2 Power & Energy Meter Sensor
Build better energy efficiency and power management with the E50B2 Power & Energy Meter. This cost-effective sensor is simple to deploy and can either be installed on standard DIN rail or be surface mounted. The E50B2 integrates with HOBO RX, UX, U30, ZW, H22, and H21 data loggers.
WattNode 208/240 VAC 3-phase Delta/Wye kWh Transducer Sensor
WattNode 208/240 VAC 3-phase Delta/Wye kWh Transducer Sensor
The WattNode provides accurate measurement at low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications. This WattNode Delta-connection kWh Transducer works with Magnelab AC Current Transformers and a Pulse Input Adapter to provide True RMS kilowatt hours of energy used, even for loads with non-sinusoidal waveforms.
WattNode 480 VAC 3-phase Delta/Wye kWh Transducer Sensor
WattNode 480 VAC 3-phase Delta/Wye kWh Transducer Sensor
The WattNode provides accurate measurement at low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications. This WattNode Delta or Wye-connection kWh Transducer works with Magnelab AC Current Transformers and a Pulse Input Adapter to provide True RMS kilowatt hours of energy used, even for loads with non-sinusoidal waveforms.
WattNode 208/240 VAC 1,2, or 3 Phase Wye kWh Transducer Sensor
WattNode 208/240 VAC 1,2, or 3 Phase Wye kWh Transducer Sensor
The WattNode provides accurate measurement at low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications. This WattNode Wye-connection kWh Transducer works with Magnelab AC Current Transformers and a Pulse Input Adapter to provide True RMS kilowatt hours of energy used, even for loads with non-sinusoidal waveforms.
WattNode 208-240VAC 2 or 3 Branch Circuit kWh Transducer Sensor
WattNode 208-240VAC 2 or 3 Branch Circuit kWh Transducer Sensor
The WattNode sensor provides accurate kWh measurement at a low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications.
Items used with above items
Electronic Switch Pulse Input Adapter - 1 meter Sensor
Electronic Switch Pulse Input Adapter - 1 meter Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
Electronic Switch Pulse Input Adapter - 6 meters Sensor
Electronic Switch Pulse Input Adapter - 6 meters Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
20 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
20 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
50 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
50 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
100 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
100 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
250 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
250 Amp Accu-CT Split-Core Current Transformer 333mV Sensor
The Accu-CT split-core current transformer offers outstanding accuracy and one-handed operation.
100 AMP Split-core AC Current Transformer Sensor
100 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 100 Amp AC Current Transformer or CT (Magnelab part # SCT-1250-100) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...200 AMP Split-core AC Current Transformer Sensor
200 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 200 Amp AC Current Transformer or CT (Magnelab part # SCT-1250-200) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...600 AMP Split-core AC Current Transformer Sensor
600 AMP Split-core AC Current Transformer Sensor
The Magnelab AC Current 600 Amp AC Current Transformer or CT (Magnelab part # SCT-2000-600) is mounted around a current carrying wire to measure AC Amperage. This CT provides 333mV output proportional to current and is used with the FlexSmart TRMS Module for True RMS measurement of sinusoidal and non-sinusoidal waveforms. The result is accurate current measurement for many types of equipment, including variable frequency drives and switched power sources...Voltage Input Lead Set Cable
Voltage Input Lead Set Cable
A voltage lead set with alligator clips that is used to wire a WattNode terminal block connected to a WattNode KWH transducer and the voltage terminals in a circuit breaker panel.
Items used with WattNodes Only
Voltage Input Lead Set Cable
Voltage Input Lead Set Cable
A voltage lead set with alligator clips that is used to wire a WattNode terminal block connected to a WattNode KWH transducer and the voltage terminals in a circuit breaker panel.
Items used with T-VER-E50B2 Only
T-VER-E50B2 wiring kit Cable
T-VER-E50B2 wiring kit Cable
Wiring kit contains the appropriate wires to connect the HOBO UX120-017 Pulse data logger to the E50B2 Power and Energy Meter and electrical panel.
5 AMP Mini Split-core AC Current Transformer Sensor
5 AMP Mini Split-core AC Current Transformer Sensor
The small size 5 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage. This CT provides a .333 Volt AC output proportional to current flow and is used with Onset data loggers via the FlexSmart TRMS module and with kWh transducers (WattNodes) for True RMS measurement of sinusoidal and non-sinusoidal waveforms.
20 AMP Mini Split-core AC Current Transformer Sensor
20 AMP Mini Split-core AC Current Transformer Sensor
The small size 20 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
50 AMP Mini Split-core AC Current Transformer Sensor
50 AMP Mini Split-core AC Current Transformer Sensor
The small size 50 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
75 AMP Mini Split-core AC Current Transformer Sensor
75 AMP Mini Split-core AC Current Transformer Sensor
The small size 75 AMP split-core AC Current Transformer (CT) is mounted around a current carrying wire to measure AC amperage.
Single Phase Fuse Kit Cable
Leaf Wetness
Leaf Wetness Smart Sensor
Leaf Wetness Smart Sensor
The Leaf Wetness Smart Sensor provides accurate leaf wetness data in a number of growing and research applications. The sensor is ready to use and does not require any painting or coating. It uses a capacitive grid that is less sensitive to surface residues than resistive grid-based sensors, and comes preconditioned for consistent measurements between sensors and for long-term stability...Items used with S-LWA-M003
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Light Intensity
Photosynthetic Light (PAR) Smart Sensor
Photosynthetic Light (PAR) Smart Sensor
The Photosynthetic Light (PAR) Smart Sensor is intended to measure light intensity for the frequencies relevant for photosynthesis. This sensor has a measurement range of 0 to 2500 umol/m2/sec over wavelengths from 400 to 700 nm. Enclosed in a anodized aluminum housing with acrylic diffuser and o-ring seal, this model has a 3m cable; a light sensor bracket and light sensor level are recommended.
Solar Radiation (Silicon Pyranometer) Smart Sensor
Solar Radiation (Silicon Pyranometer) Smart Sensor
Effectively measure light levels with this silicon pyranometer sensor. The Solar Radiation Smart Sensor enables rapid deployment. Since HOBO data loggers recognize this sensor, no complicated programming or setup is required. This product offers a measurement range of 0 to 1280 W/m2 over a spectral range of 300 to 1100 nm. A measurement averaging mode is available.
Items used with above items
Light Sensor Bracket
Light Sensor Bracket
The light sensor bracket is designed for use with tripods, masts, or flat surfaces. Use to avoid obstructions and shadows that could affect your PAR or solar radiation measurements. Includes leveling screws.
Light Sensor Level
Light Sensor Level
Simply drop the light sensor level over the PAR or solar radiation sensor to determine if the sensor is level. Purchase one for use on any number of light sensors.
NDVI Light Sensor Bracket
NDVI Light Sensor Bracket
This bracket is used to mount two PAR sensors (Part# S-LIA-M003) and two solar radiation sensors (Part# S-LIB-M003) on the Light Sensor Bracket (Part# M-LBB) for making the measurements needed to calculate the Normalized Difference Vegetati
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Rainfall
Davis® 0.01" Rain Gauge Smart Sensor
Davis® 0.01" Rain Gauge Smart Sensor
Davis® Rain Gauge Smart Sensors are compatible with all HOBO weather station loggers, HOBOware, and HOBOlink. They offer the same ease-of-use as existing Onset Smart Sensors, providing cost-effective HOBO weather stations for projects on a tight budget. The sensors feature a plug-in modular connector for easy installation, and all configuration parameters are stored in the sensor and automatically communicated to the logger, eliminating the need for programming or extensive setup...Davis® 0.2 mm Rain Gauge Smart Sensor
Davis® 0.2 mm Rain Gauge Smart Sensor
The Davis® Rain Gauge Smart Sensors features the new AeroCone® design, for better measurement accuracy in high-wind conditions. This gauge is made from UV-stabilized ABS plastic to provide a cost-effective sensor for rainfall measurement, and is plug-and-play compatible with all HOBO weather stations.
Also available in a wireless model for use with the HOBOnet Field Monitoring System.
0.01" Rain Gauge (2m cable) Smart Sensor
0.01" Rain Gauge (2m cable) Smart Sensor
This Rain Gauge Smart Sensor measures rainfall with intensity up to five inches per hour with a resolution of 0.01 inch, and 1% accuracy for rainfall rates up to 1"/hour. The tipping bucket mechanism is mounted on a stainless steel shaft with brass bearings. This model includes a 2m cable.
0.2 mm Rainfall (2m cable) Smart Sensor
0.2 mm Rainfall (2m cable) Smart Sensor
This Rain Gauge Smart Sensor measures rainfall with a resolution of .2 mm, and 1% accuracy for rainfall rates up to 12.7 cm. The tipping bucket mechanism is mounted on a stainless steel shaft with brass bearings. This model includes a 2m cable.
Contact Closure Pulse Input Adapter - 1 meter Sensor
Contact Closure Pulse Input Adapter - 1 meter Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Contact Closure Pulse Input Adapter - 6 meters Sensor
Contact Closure Pulse Input Adapter - 6 meters Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Items used with above items
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Relative Humidity
Temperature/Relative Humidity (2m cable) Smart Sensor
Temperature/Relative Humidity (2m cable) Smart Sensor
The Temperature/Relative Humidity Smart Sensor is designed to work with all Onset data loggers that accept smart sensors. All sensor parameters are stored inside the smart sensor, which automatically communicates configuration data information to the logger without any programming, calibration, or extensive user setup.
Temperature/Relative Humidity (8m cable) Smart Sensor
Temperature/Relative Humidity (8m cable) Smart Sensor
The Temperature/Relative Humidity Smart Sensor is designed to work with all Onset data loggers that accept Smart Sensors. All sensor parameters are stored inside the Smart Sensor, which automatically communicates configuration data information to the logger without any programming, calibration, or extensive user setup.
Items used with above items
Solar Radiation Shield
Solar Radiation Shield
Use the RS3-B Solar Radiation Shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight. The small size and unobstructed airflow of this shield provides a faster response to changing conditions than larger radiation shields.
The RS3-B Solar Radiation Shield works with most of Onset's external temperature and temperature/relative humidity sensors, including those for our award-winning HOBO Weather Station products...Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Soil Moisture
EC5 Soil Moisture Smart Sensor
EC5 Soil Moisture Smart Sensor
This affordably-priced soil moisture smart sensor offers a two-tine design for easy installation. This sensor integrates the field-proven ECH2O™ EC-5 Sensor and a 12-bit A/D. It provides ±3% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration. Readings are provided directly in volumetric water content. This sensor is designed to maintain low sensitivity to salinity and textural effects.
10HS Soil Moisture Smart Sensor
10HS Soil Moisture Smart Sensor
Measure soil moisture over a large volume of soil with the affordably-priced 10HS Soil Moisture Smart Sensor. This sensor integrates the field-proven 10HS Sensor and a 12-bit A/D, providing ±3% accuracy in most soils conditions, and ±2% accuracy with soil-specific calibration. The 10cm probes measure soil moisture over a larger volume of soil, helping to average out any soil variability. Readings are provided directly in volumetric water content.
Items used with above items
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Temperature
12-Bit Temperature Smart Sensor
12-Bit Temperature Smart Sensor
The 12-bit Temperature Smart Sensor provides < ± 0.2° C total accuracy (< ±0.36° F) and resolution of < ± 0.03° C (< ±0.054° F) over the range of from 0° to 50° C (32° to 122° F). The full measurement range is -40° to 100° C (-40° to 212° F). A selectable measurement-averaging feature further improves accuracy. Available in cable lengths of 2m, 6m and 17m.
Items used with S-TMB-M0xx
Solar Radiation Shield
Solar Radiation Shield
Use the RS3-B Solar Radiation Shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight. The small size and unobstructed airflow of this shield provides a faster response to changing conditions than larger radiation shields.
The RS3-B Solar Radiation Shield works with most of Onset's external temperature and temperature/relative humidity sensors, including those for our award-winning HOBO Weather Station products...Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Water Flow
No-lead Water Flow Meter Sensor
No-lead Water Flow Meter Sensor
Measure cold and hot water flow rates with this compact, affordable water meter. The small-sized T-MINOL-130-NL is designed for deployment in apartments, assisted living communities, and other commercial buildings. Please note, the T-MINOL is configured for use with 3/4" pipes. (Use step-ups or step-downs to deploy the T-MINOL with 1/2" or 1" pipe diameters.)
Items used with T-MINOL-130-NL
Contact Closure Pulse Input Adapter - 1 meter Sensor
Contact Closure Pulse Input Adapter - 1 meter Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Contact Closure Pulse Input Adapter - 6 meters Sensor
Contact Closure Pulse Input Adapter - 6 meters Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Items used with above items
Contact Closure Pulse Input Adapter - 1 meter Sensor
Contact Closure Pulse Input Adapter - 1 meter Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Contact Closure Pulse Input Adapter - 6 meters Sensor
Contact Closure Pulse Input Adapter - 6 meters Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Wind
RM Young Wind Monitor (model 05103) Sensor
RM Young Wind Monitor (model 05103) Sensor
The Wind Monitor is a high performance wind sensor that is compatible with Onset's line of research-grade weather stations, including the RX3000, U30-NRC, H21, and H22 systems. When paired with the S-WCE-M003 wind sensor adapter, it offers plug-and-play performance with Onset stations, eliminating the need for programming or complex wiring.
Rugged, corrosion-resistant construction makes the Wind Monitor ideal for a wide range of wind measuring applications...View Product
RM Young Marine Wind Monitor (model 05106) Sensor
RM Young Marine Wind Monitor (model 05106) Sensor
The Wind Monitor is an accurate and reliable wind sensor specifically designed for the rigors of the marine environment, that is compatible with Onset's line of research-grade weather stations, including the RX3000, U30-NRC, H21, and H22 systems. When paired with the S-WCC-M003 wind sensor adapter, it offers plug-and-play performance with Onset stations, eliminating the need for programming or complex wiring.
The wind speed sensor is a four blade helicoid propeller...View Product
RM Young AQ Wind Monitor (model 05305) Sensor
RM Young AQ Wind Monitor (model 05305) Sensor
The Wind Monitor is a high resolution wind sensor for air quality applications, that is compatible with Onset's line of research-grade weather stations, including the RX3000, U30-NRC, H21, and H22 systems. When paired with the S-WCB-M003 wind sensor adapter, it offers plug-and-play performance with Onset stations, eliminating the need for programming or complex wiring. It combines low threshold, fast response and excellent fidelity to meet important regulatory standards.


U.S...View Product
Davis® Wind Speed and Direction Smart Sensor
Davis® Wind Speed and Direction Smart Sensor
Davis® Wind Speed/Direction Smart Sensors are compatible with all HOBO weather station loggers, HOBOware, and HOBOlink. They offer the same ease-of-use as existing Onset Smart Sensors, providing cost-effective HOBO weather stations for projects on a tight budget. The sensors feature a plug-in modular connector for easy installation, and all configuration parameters are stored in the sensor and automatically communicated to the logger, eliminating the need for programming or extensive setup...Ultrasonic Wind Speed and Direction Smart Sensor
Ultrasonic Wind Speed and Direction Smart Sensor
The Ultrasonic Wind Speed and Direction Smart Sensor is compact and rugged with no moving parts. Because this sensor is ultrasonic it is able to measure very low wind speeds, down to 0.4 m/s (compared to 1.0 m/s for our mechanical sensors). As with all Onset smart sensors, this sensor is plug-and-play with HOBO stations (RX3000, RX2100, USB Micro Station, H22, and the U30-NRC)...Wind Direction Smart Sensor
Wind Direction Smart Sensor
The Wind Direction Smart Sensor is a research-grade plug-and-play sensor for measuring and logging wind data. It provides average wind direction for the measurement interval. This highly-durable wind vane has a drip overhang for anti-icing. Its shielded stainless-steel ball bearings and static-dissipating housing provide a long sensor life. The sensor calculates a unit vector average of the wind direction, providing data directly in degrees.
Items used with S-WDA-M003
Grounding Wire Cable
Grounding Wire Cable
This grounding wire is required if using a wind speed or wind speed and direction sensor with an H21-USB or RX2100 station, or if the H21-USB or RX2100 station will be placed in an exposed location on a tripod or tower.
Full Cross Arm
Full Cross Arm
For use with Onset tripods or masts, the full cross arm assures unobstructed wind measurement. Full cross arm (91.2cm/36in) provides mounting for two wind sensors.
Half Cross Arm
Half Cross Arm
For use with Onset tripods or masts, the half cross arm assures unobstructed wind measurement. Half cross arm (49cm/19.2in) provides mounting for one wind sensor
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Wind Speed Smart Sensor
Wind Speed Smart Sensor
Measure wind speed from 0 to 76 m/s (0 to 170 mph). This smart sensor provides data reporting average wind speed and highest 3 second gust for each logging interval. The starting threshold is 1 m/s (2.2 mph); sensor survives through 170 mph. This model comes with a 3m cable.
NOTE: an M-CAA Full Cross Arm or a M-CAB Half Cross Arm is required for mounting.
Items used with S-WSB-M003
Grounding Wire Cable
Grounding Wire Cable
This grounding wire is required if using a wind speed or wind speed and direction sensor with an H21-USB or RX2100 station, or if the H21-USB or RX2100 station will be placed in an exposed location on a tripod or tower.
Full Cross Arm
Full Cross Arm
For use with Onset tripods or masts, the full cross arm assures unobstructed wind measurement. Full cross arm (91.2cm/36in) provides mounting for two wind sensors.
Half Cross Arm
Half Cross Arm
For use with Onset tripods or masts, the half cross arm assures unobstructed wind measurement. Half cross arm (49cm/19.2in) provides mounting for one wind sensor
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Wind Speed and Direction Set Smart Sensor
Wind Speed and Direction Set Smart Sensor
The Wind Sensor Set includes Onset's research-grade plug-and-play Wind Speed Smart Sensor and the Wind Direction Smart Sensor. This combination provides average wind speed, highest 3-second wind gust, and average wind direction for the measurement interval. These durable sensors will provide many years of accurate and reliable performance.
Items used with S-WSET-B
Grounding Wire Cable
Grounding Wire Cable
This grounding wire is required if using a wind speed or wind speed and direction sensor with an H21-USB or RX2100 station, or if the H21-USB or RX2100 station will be placed in an exposed location on a tripod or tower.
Full Cross Arm
Full Cross Arm
For use with Onset tripods or masts, the full cross arm assures unobstructed wind measurement. Full cross arm (91.2cm/36in) provides mounting for two wind sensors.
Half Cross Arm
Half Cross Arm
For use with Onset tripods or masts, the half cross arm assures unobstructed wind measurement. Half cross arm (49cm/19.2in) provides mounting for one wind sensor
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
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Sensor Adapters (optional)
Choose your voltage & pulse inputs:
Analog Input
12-bit Voltage Input Adapter Sensor
12-bit Voltage Input Adapter Sensor
The 12-bit Voltage Input Adapter interfaces with sensors providing 0-5 VDC signals to act as a smart sensor with compatible data loggers. This adapter features both a non-switched input and a battery-saving switched input that extends the life of external batteries. It also provides a trigger signal for controlling power to attached external sensors, while offering digital filtering which improves measurement accuracy with 32 readings/sample.
12-bit 4-20mA Input Adapter Sensor
12-bit 4-20mA Input Adapter Sensor
The 12-bit 4-20 mA Input Adapter interfaces with any sensor providing a 4-20 mA signal to connect to smart sensor compatible HOBO stations. This adapter features both a non-switched input and a battery-saving switched input that extends the life of external batteries. It also provides a trigger signal for controlling power to attached external sensors, while offering digital filtering which improves measurement accuracy with 32 readings/sample and 60 Hz noise rejection.
Items used with above items
Smart Sensor Consolidator Box Adapter
Smart Sensor Consolidator Box Adapter
Allows users to connect up to six Smart Sensors in a water-resistant enclosure to one sensor extension cable back to HOBO stations with Smart Sensor inputs.
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Pulse Input
Electronic Switch Pulse Input Adapter - 1 meter Sensor
Electronic Switch Pulse Input Adapter - 1 meter Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
Electronic Switch Pulse Input Adapter - 6 meters Sensor
Electronic Switch Pulse Input Adapter - 6 meters Sensor
The Electronic Switch Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This Smart Sensor is compatible with electronic switch closures such as FET or open-collector outputs, or CMOS-level logic signals with a maximum input frequency of 120 Hz (120 pulses per second). See how the pulse recorder works.
Contact Closure Pulse Input Adapter - 1 meter Sensor
Contact Closure Pulse Input Adapter - 1 meter Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Contact Closure Pulse Input Adapter - 6 meters Sensor
Contact Closure Pulse Input Adapter - 6 meters Sensor
The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open. See how the pulse recorder works.
Items used with above items
Weatherproof Extension Housing
Weatherproof Extension Housing
A 6.5-inch long, Xenoy weatherproof housing that protects the connection between sensors and sensor extension cables (S-EXT-M0xx).
Smart Sensor Extension Cable - 2m length Cable
Smart Sensor Extension Cable - 2m length Cable
A 2-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 5m length Cable
Smart Sensor Extension Cable - 5m length Cable
A 5-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 10m length Cable
Smart Sensor Extension Cable - 10m length Cable
A 10-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Smart Sensor Extension Cable - 25m length Cable
Smart Sensor Extension Cable - 25m length Cable
A 25-meter Smart Sensor male-to-male extender cable, plus a female-to-female adaptor
Wind
R.M. Young Wind Monitor-AQ (model 05305) Adapter
R.M. Young Wind Monitor-AQ (model 05305) Adapter
The S-WCB-M003 adapter connects the R.M. Young Wind Monitor-AQ Sensor (model 05305) with Onset's line of research-grade weather stations, including the HOBO U30 Remote Monitoring System, H21, and H22 weather station and energy monitoring systems. The R.M.
R.M. Young Marine Wind Monitor (model 05106) Adapter
R.M. Young Marine Wind Monitor (model 05106) Adapter
The S-WCC-M003 adapter connects the R.M. Young Marine Wind Monitor Sensor (model 05106) with Onset's line of research-grade weather stations, including the HOBO U30 Remote Monitoring System, H21, and H22 weather station and energy monitoring systems.
R.M. Young Wind Monitor for Wind/Alpine (model 05103) Adapter
R.M. Young Wind Monitor for Wind/Alpine (model 05103) Adapter
The S-WCE-M003 adapter connects the R.M. Young Wind Monitor Sensor (model 05103) with Onset's line of research-grade weather stations, including the RX3000, U30-NRC, H21, and H22 systems.
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Accessories
Batteries
Lithium Batteries
Lithium Batteries
A cellophane four-pack of long-lasting, cold-tolerant lithium AA batteries. Note: lithium batteries cannot be shipped on commercial airlines, and no more than 24 can be shipped in a single box
Cable Adapters - Splitters
Smart Sensor Consolidator Box Adapter
Smart Sensor Consolidator Box Adapter
Allows users to connect up to six Smart Sensors in a water-resistant enclosure to one sensor extension cable back to HOBO stations with Smart Sensor inputs.
Cable Management
Cable Caddy
Cable Caddy
This accessory provides a convenient place to organize and mount excess sensor cable.
Carrying Case
Pelican Case
Pelican Case
The largest, most durable airline-legal carry-on available, the new 1510 Pelican case provides safe and convenient transport of your HOBO data logging equipment. This watertight, crush-proof, and dust-proof case features a sturdy but lightweight design that includes a Pick N Pluck™ foam interior, 17” retracting extension handle, strong polyurethane wheels, stainless steel hardware, padlock protectors, and a lifetime guarantee of excellence.
Communication Cables
USB Cable
USB Cable
This USB data logger-to-PC communications cable is six feet long and coated in black plastic
Compliance Certificates
Compliance Certification
Compliance Certification
This compliance certificate states that the individual data logger is in compliance with its specification as described in its product manual and has passed all applicable tests. Zoom image to see sample certification.
Grounding Wires
Grounding Wire Cable
Grounding Wire Cable
This grounding wire is required if using a wind speed or wind speed and direction sensor with an H21-USB or RX2100 station, or if the H21-USB or RX2100 station will be placed in an exposed location on a tripod or tower.
Tripod Parts, Kits and Masts
3m mast
3m mast
The 3-meter mast is ideal for mounting Onset weather station loggers and sensors. It can be mounted in concrete, attached to a structure, or used to extend Onset tripod masts (1-5/8” diameter).
1.5 meter mast
1.5 meter mast
The 1.5-meter mast is ideal for mounting HOBO weather station loggers and sensors, and HOBO data logging rain gauges. It can be driven into the ground, mounted in concrete, or attached to a structure.
Items used with above items
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
HWS 3m Tripod Tower with mast
HWS 3m Tripod Tower with mast
3-meter tripod with mast used for mounting loggers and other sensors in a weather station application. Can be placed on any slope less than 13 degrees. (Cross arms, data logger, sensors, and radiation shield sold separately.)
Items used with M-TPA
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
HOBO Weather Station 3-Meter Tripod Kit Kit
HOBO Weather Station 3-Meter Tripod Kit Kit
This kit has everything you need for a 3-meter tripod configuration of the HOBO Weather Station or HOBO Micro Station. The 3-meter tripod accommodates moderately sloping terrain. The Kit includes a 3-meter tripod (M-TPA), Grounding Kit (M-GKA), Guy Wire Kit (M-GWA), 1/2" Stake Kit (M-SKA) for guy wires and tripod, and Mast Level (M-MLA)
NOTE: If you want to extend the Guy Wire out past the feet on the tripod, you can purchase another 1/2" Stake Kit (M-SKA).
Items used with M-TPA-KIT
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
HWS 2m Tripod Tower with mast
HWS 2m Tripod Tower with mast
2-meter tripod with mast used for mounting loggers and other sensors in a weather station application. This tripod is not adjustable for sloping surfaces. (Cross arms, data logger, sensors, and radiation shield sold separately.)
Items used with M-TPB
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
HOBO Weather Station 2-Meter Tripod Kit Kit
HOBO Weather Station 2-Meter Tripod Kit Kit
Everything you’ll need for a 2-meter tripod configuration of the HOBO Weather Station or HOBO Micro Station. The Kit includes a 2-meter tripod (M-TPB), Grounding Kit (M-GKA), Guy Wire Kit (M-GWA), 1/2” Stake Kit (M-SKA) for guy wires, 1/4” Stake Kit (M-SKB) for tripod, and Mast Level (M-MLA).
Items used with M-TPB-KIT
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
U-BOLT-KIT2 (Qty 2)
U-BOLT-KIT2 (Qty 2)
Two 1-5/8" saddle-clamp U-bolts for mounting HOBO USB Micro Station, U30-NRC, RX3000 Remote Monitoring System or RX2100 MicroRX Station on Onset tripods or masts.
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Software
Choose your Software:
Graphing & Analysis
HOBOware Pro - Mac/Win (Download Only) Software
HOBOware Pro - Mac/Win (Download Only) Software
Powerful, Intuitive, One-of-a-Kind: HOBOware® Pro is Onset's flagship data logging software used for all HOBO data loggers and wireless data nodes. You can easily set up your application in a matter of minutes, quickly read out and plot data, and export to spreadsheets for further analysis all with an intuitive, point-and-click interface. From setup to analysis, no other data logger software can compare to the power and simplicity of HOBOware Pro.
HOBOware Pro CD or USB Drive Software
HOBOware Pro CD or USB Drive Software
Powerful, Intuitive, One-of-a-Kind: Put your data to productive use with HOBOware® Pro software. Plot or export data to spreadsheets to conduct analysis necessary for your project. HOBOware® Pro is easy to set up and its intuitive, point-and-click interface makes it simple to run. This data logging application is compatible with all HOBO data loggers and wireless data nodes.
HOBOware Pro CD or USB Drive Software
HOBOware Pro CD or USB Drive Software
Powerful, Intuitive, One-of-a-Kind: Put your data to productive use with HOBOware® Pro software. Plot or export data to spreadsheets to conduct analysis necessary for your project. HOBOware® Pro is easy to set up and its intuitive, point-and-click interface makes it simple to run. This data logging application is compatible with all HOBO data loggers and wireless data nodes.
Items used with above items
USB Cable
USB Cable
This USB data logger-to-PC communications cable is six feet long and coated in black plastic
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Please review your order:
Model: H21-USB
Estimated Order Total: 0
H21-USB configuration has been added to the cart. Click here to checkout
- HOBO H21-USB Micro Station
- Four AA 1.5V alkaline batteries
- Rubber plugs
- Grease packet
- Screws and washers
- Cable ties
Documentation for the H21-USB
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.
Product Overview Videos
On-Demand Webinars
How-To Videos
Tech Notes
Informational Pages
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The HOBO RX3000, Onset's most flexible remote data logging station, provides instant access to site-specific environmental data anywhere, anytime via the internet. The station combines the versatility and sensor quality of more expensive systems, an onboard LCD display, and the convenience of plug-and-play operation. The RX3000 is a configurable system (see "Configure System" tab below).
The RX3000 station is the basic component of the cost-effective and scalable HOBOnet Field Monitoring System for crop management, environmental research, and greenhouse operations.
This affordably-priced soil moisture smart sensor offers a two-tine design for easy installation. This sensor integrates the field-proven ECH2O™ EC-5 Sensor and a 12-bit A/D. It provides ±3% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration. Readings are provided directly in volumetric water content. This sensor is designed to maintain low sensitivity to salinity and textural effects.
Also available in a wireless model for use with the HOBOnet Field Monitoring System.
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Detailed Specifications
HOBO USB Micro Station Data Logger
| 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 |
Smart Sensor Connectors |
5 |
| Smart Sensor Data Channels | Maximum of 15 (some smart sensors use more than one data channel; see sensor manual for details) |
Smart Sensor Network Cable Length |
100 m (328 ft) maximum |
Logging Interval |
1 second to 18 hours |
Start Modes |
Immediate, at interval, push button, or delayed start |
Memory Modes |
Stop when full or wrap when full |
Memory |
512 KB nonvolatile flash data storage |
Time Accuracy |
0 to 2 seconds for the first data point and ±5 seconds per week at 25°C (77°F) |
Battery Type |
Four AA 1.5 V alkaline batteries for operating conditions of -20° to 50°C (-4° to 122°F); four AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
Battery Life |
1 year, typical use (up to five sensors with 1 minute or greater logging interval) |
Communication Type |
USB 2.0 interface |
Full Memory Download Time |
4 minutes |
Enclosure Access |
Hinged door secured by one latch with eyelet for use with user-supplied padlock |
Materials |
Outer enclosure: Polycarbonate/PBT blend with stainless steel hinge pins; Gaskets: Silicone rubber; Cable channel: EPDM rubber |
Dimensions |
17.04 x 11.94 x 4.47 cm (6.71 x 4.70 x 1.76 in.) see diagrams in manual Padlock hole diameter: 0.58 cm (0.23 in.) |
Weight |
414g (14.6 oz.) |
Environmental Rating |
Weatherproof enclosure, NEMA 4X and IP66 |
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The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
