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Bluetooth Data Logger

TR4 Series


The TR4 series are data loggers equipped with Bluetooth low energy. With a smartphone/tablet and our dedicated apps, logger communication and data management have never been easier.

We offer dedicated apps for the real-time monitoring of fluctuating data, the uploading of recorded data to our free cloud-based "T&D WebStorage Service", and the creation of PDF reports for specified periods.


  • Real-Time Data Monitoring from Smart Device
  • Simultaneous Data Upload from Multiple Loggers to Cloud
  • Report Creation and Output

Learn more about the Apps and Features here.

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