Zhejiang Lierda Internet of Things technology Co. Ltd LSD4WN2L917M90 Benutzerhandbuch
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3）、Server response
According to LoRaWAN network Class A operating characteristics, for any
packet of data, the user server can give a response. If the module receives the
user server data, it will immediately output through the serial port. Therefore,
due to the reason for the data frame packet, the user's one frame of data may
receive a number of response packets.