Vaisala HMT140 User Manual page 46

HMT140 User Guide
4. To modify the default UDP port (default is 6767): code
[Settings]
DefaultPort=6767
5. To specify the auto find channels:
[Settings]
ChannelMask=1,2,3,4,5,6,7,8,9,10,11
6. Restart the HMT140 Utility to apply the changes.
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