How can I send a message (TX-downlink) to end-node?

Applications
1

Hi All,

Now, I could set my LoRa Server. Please advice me about how can i send value to downlink? . If you have an example please show me for understand.

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2

Please use the search, this has been asked before:

https://forum.loraserver.io/search?q=send%20data%20to%20device
https://forum.loraserver.io/search?q=no%20authorization%20data