Wiesemann & Theis GmbH

Networking, sensors and interface technology for industry, office and IT

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Firmware:

Web Thermo-Hygrometer XT

#57722

Current firmware
Date Changes and comments Revision
July 29, 2026
  • TLS - Certificate management revamped
  • TLS - Added consistency check for TLS keys
  • System startup stabilized
  • The values for absolute humidity, dew point, mixing ratio, and enthalpy can now be retrieved via Modbus-TCP
Once you have updated to this firmware version, you will no longer be able to downgrade to versions earlier than v1.77.
Rolling back to earlier firmware versions after this update may cause problems and is not recommended.
 1.82
UHD download
SHA-256 hash:
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Older firmware
Date Changes and comments Revision
June 9, 2026
  • Internal timing optimized
  • Internal memory handling optimized
  • Watchdog monitoring optimized
  • Connection management optimized
Once you have updated to this firmware version, you will no longer be able to downgrade to versions earlier than v1.77
 1.81
on request
January 7, 2026
  • Basic initialization at system startup revised
  • Watchdog timing optimized
 1.79
on request
June 17, 2025
  • MQTT functionality optimized
  • MQTT <empty> tag added for sending an empty message
  • HTTP Request Message optimized
  • Messages - Replacement for <IP> corrected
  • Problem in cloud transfer fixed
  • Problem with block length of encrypted transmissions fixed
 1.74
on request
August 27, 2024
  • System start optimized
  • Problem fixed: OPC UA: No certificate provided after Anonymous Login
 1.73
on request
June 13, 2024
  • First firmware version
 1.71
on request
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