• Weatherproof IP66 enclosure
  • Direct USB offload
  • 328ft (100m) maximum cable length
  • Includes five smart sensor inputs
  • Operating range:
    • -4 to 122°F (-20 to 50°C) alkaline batteries
    • -40 to 158°F (-40 to 70°C) lithium batteries
  • 1 second to 18 hours logging intervals
  • Hinged door and integrated mounting tabs
  • Compatible with HOBOware and HOBOware Pro software


The HOBO H21-USB Micro Station Data Logger is a weatherproof data logger for multi-channel monitoring of microclimates. 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 an integrated mounting tabs for easy installation.



This product can be used in the following applications: