Frequently Asked Questions (FAQ)

How long can a data logger record for? 

  • The duration is determined by memory size and the logging interval. Most HOBO loggers store 80,000+ readings, which covers over 270 days at a 5-minute interval. Battery life typically lasts 1 to 3 years.

Do I need special software to read the data? 

  • Most modern loggers use free manufacturer software or smartphone apps, such as HOBOware (desktop) or HOBOconnect (mobile). Some models, such as the Tempmate series, can generate PDF reports automatically upon connection.

What is the difference between data logger accuracy and resolution? 

  • Resolution is the smallest change the logger can detect (e.g., 0.02°C), while accuracy is how close that reading is to the actual true value (e.g., ±0.2°C). In critical applications, accuracy is the more vital metric.

Can data loggers be calibrated? 

  • Yes. For applications requiring documented traceability (pharma, food safety, research), OneTemp offers NATA-accredited calibration services. Re-calibration is typically recommended every 12 to 24 months.

How do I monitor a site with no power or internet? 

  • Battery-powered data loggers are self-contained and require no external power or connectivity; data is retrieved manually via USB or Bluetooth. For remote sites requiring live updates, we offer solar-powered cellular IoT options.

How do I get data out of a data logger?

One of the most overlooked aspects of choosing a data logger is how you’ll actually use the data. Here’s what you need to know:

HOBOware & HOBOconnect (Included Software)

HOBO loggers come with free software that covers 90% of use cases:

  • Download data via USB (HOBOware desktop app for Windows/Mac) or Bluetooth (HOBOconnect mobile app for iOS/Android)
  • View data in graphs, export to CSV or Excel, and generate basic reports
  • No subscription fees, no vendor lock-in
  • Free updates as new features are released

HOBOlink Cloud Platform (Optional Subscription)

If you want centralized monitoring across multiple locations or need real-time visibility, HOBOlink adds:

  • Cloud storage with automatic uploads from Bluetooth loggers via MX Gateway
  • Dashboards and email/SMS threshold alerts
  • Remote access from any device, anywhere
  • Ideal for distributed monitoring or compliance documentation across sites

Export & Custom Integration

Need to feed data into Python, Grafana, your own dashboard, or legacy systems?

  • HOBOware exports are standards-based (CSV, Excel, XML)
  • Your engineering team can build custom workflows without vendor restrictions
  • No proprietary formats that lock you in

OneTemp Tip: Before committing to a multi-site deployment, test the included software with a single logger. This helps confirm the workflow matches your team’s needs and skill level.