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![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-800x800h.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-4-800x800.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-3-800x800.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-1-800x800.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-2-800x800.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-100x100h.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-4-100x100.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-3-100x100.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-1-100x100.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
![Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger](image/cache/wp/gj/Products/Hobo_H21-USB-2-100x100.webp "Onset HOBO H21-USB [H21-USB] USB Micro Station Data Logger")
The HOBO H21-USB Micro Station is a weatherproof data logger designed for applications requiring multi-channel monitoring of microclimates in one or more locations. With its rugged, compact design, this battery-powered logger supports five plug-and-play smart sensors. You can quickly mount the logger on a stake, flat surface, or mast using the logger’s built-in mounting tabs. With HOBOware, you can easily configure the logger, check the status, and download data for graphing and analysis (available at www.onsetcomp.com/hoboware-free-download).
4-20mA, Amp Hour, Barometric Pressure, DC Voltage, Kilowatt Hours, Leaf Wetness, Light Intensity, Power Factor, Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Volt-Amp Reactive, Volt-Amp Reactive hour, Volt-Amps, Water Flow, Watt Hours, Watts, Wind.
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![Onset HOBO BHW-PRO [BHW-PRO-CD] HOBOware PRO v.3.x for PC & Mac](image/cache/wp/gj/Products/Hobo_BHW-PRO-CD-200x200.webp "Onset HOBO BHW-PRO [BHW-PRO-CD] HOBOware PRO v.3.x for PC & Mac")
