HOBO USB Micro Station
Features
- Weatherproof IP66 enclosure for harsh environments
- Direct USB offload using CABLE-USBMB
- Includes five smart sensor inputs
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Onset HOBO USB Micro Station is a weatherproof data logger for multi-channel monitoring of microclimates. This battery-powered station accepts up to five plug-and-play Smart Sensors (sold separately) and has a hinged door to make sensor installation simple and quick.
Compatibility
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 using the USB cable (sold separately). Hoboware software is also required for configuration and readout.
Note: that the H21-USB is not compatible with macOS 13 and 14
| 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 |
- HOBO H21-USB Micro Station
- Four AA 1.5V alkaline batteries
- Rubber plugs
- Grease packet
- Screws and washers
- Cable ties
Select Options
In The News
Three Decades of Research at Acton Lake
A multi-disciplinary team at Miami University, Ohio, has been studying the environmental change at Acton Lake for over three decades. Using three different NexSens buoys over this time, the team has an incredible archive of data that is helping build a picture of Acton’s past, present, and future. Until recently, a NexSens CB-50 buoy was used alongside other environmental monitoring at Acton Lake. In May 2025, the Miami team deployed a new XB-200 buoy , future-proofing their ongoing monitoring using real-time buoy systems. Acton Lake, a small hypereutrophic reservoir in southwest Ohio, covers 2.4km² and has a maximum depth of about 8m. The dam was built in 1956, and the lake has a large agricultural watershed.
Read More
Source Water Monitoring in Albany, New York: Tracing Water Quality throughout Tributaries
Thousands of US cities pull their drinking water from natural source waters like reservoirs, rivers, and streams, making overall watershed health a key consideration for water providers. In Albany, New York, the Albany Department of Water and Water Supply delivers drinking water to over 100,000 residents as well as monitors and manages the larger drinking water supply watershed. Hannah Doherty, Environmental Specialist at the Albany Department of Water and Water Supply , spends her days working with a small team to monitor the drinking supply and the connected water bodies. Doherty explains, “We’re the first to encounter the water that ends up being the drinking water.
Read More
Wildfire Prevention in the Sierra Nevada Region with the Yuba Watershed Institute
Though recent wildfires have sparked new conversations about wildfire management and response, groups like the Yuba Watershed Institute have been monitoring the forests and water resources of the Sierra Nevada region for decades, managing approximately 5,000 acres of land with the Bureau of Land Management (BLM) and about 7,000 acres in private land partnerships. The goal of the Institute is to work with local communities and land agencies to improve watershed and forestry management through informed practices and public outreach. The goals of the Yuba Watershed Institute are three-fold: Improve the ability of fire suppression agencies like the California Department of Forestry and Fire Protection ( CAL FIRE ) and the US Forest Service.
Read More
