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USR-GPRS232-DTU USR MANUAL
Page 26 of 38
Jinan USR IOT Technology Limited
5.2 Serial Command Mode
Currently serial command mode functionality being improved in our company.
5.3 AT command mode
DTU module in the AT command mode, AT commands can be sent via SMS, to establish a network connection,
data transfer and other operations.
In this mode, the user's device to DTU module has complete control over, you can support the instruction set of
modules corresponding operation.
Under the AT command mode supports AT command set, please refer to: