RTR500BC for Windows(US/EU) Update (Ver. 2.21)

Apps/Software/Firmware Jan 28, 2026

An update program for "RTR500BC for Windows" has been released. For customers using the software below, please download and install the following update program.

Affected Product / Version

RTR500BC for Windows (US/EU) / Versions 2.20 or lower

Update Details

  • Added support for OAuth 2.0 (Microsoft Exchange Online) authentication to the email sending function.
  • Fixed the following problems in the RTR500BC Data Viewer:
    - Transmission could fail when sending current readings or recorded data if the setting was configured to send data only without saving it to the PC.
    - On the Data Viewer main screen, the recording attributes, upper limits, and lower limits for some channels were not displayed in the Remote Unit Information.
    - On the Current Readings Monitor screen, the buttons at the top and the next update time were not displayed correctly.
    - When warning mail transmission failed, retries were performed every second instead of at 10-minute intervals after the first retry.
  • Rebuilt the software using Microsoft Visual C++ 2019 (x86) so that it runs without requiring the following runtime components to be installed:
    - Microsoft Visual C++ 2008 Redistributable
    - Microsoft Visual C++ 2010 Redistributable
  • Updated the User's Manual and Help file.
  • Other small fixes and improvements.

Go to download page for RTR500BC for Windows (US)
Go to download page for RTR500BC for Windows (EU)

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