HOBO® TidbiT MX2205 External Temp Data Logger

  • $251.00

The HOBO TidbiT MX2205 is ideal for monitoring shallow waters, like streams and wetlands, or for monitoring soil in fields that are prone to flooding. Equipped with both an internal sensor to monitor ambient temperature and an external sensor on a 2m cable to accurately monitor fast-changing temperatures, the HOBO TidbiT Mx2205 is a low-cost, easy-to-use, waterproof logger that leverages the power of Bluetooth to deliver high-accuracy data straight to your mobile device or Windows laptop running Onset's free HOBOconnect app. This rugged logger withstands harsh environments, and can be deployed just above water or soil for quicker, more convenient data downloads that don’t require pulling up the logger.


  • Fast temperature-response time (20 seconds)
  • ±0.2°C (±0.36°F) accuracy
  • 3-year battery life (Bluetooth on); 5-year battery life (Bluetooth off)
  • Two mounting tabs for use with screws or zip ties ensure secure deployment
  • Works with Onset’s free HOBOconnect app
  • External temperature sensor, plus internal sensor for ambient temp monitoring
  • Large memory stores 96,000 measurements
  • LED indicates when temperature exceeds set threshold
  • Convenient wireless setup and download via Bluetooth


Temperature Sensors

Probe | -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year
Logger | -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water, maximum sustained temperature in water 30°C (86°F)
±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F)
±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F)
±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F)
±0.25°C from -20° to 0°C (±.45°F from -4° to 32°F)
±0.2°C from 0° to 70°C (±0.36°F from 32° to 158°F)
0.01°C (0.018°F)
<0.1°C (0.18°F) per year

The HOBO MX2205 data logger requires the HOBOmobile App and a compatible mobile device. 

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