USR-GPRS232-DTU USR MANUAL
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Jinan USR IOT Technology Limited
Note:
1, Httpd Client functionality is essentially based on TCP Client functions on doing Http GET package.
2, the current module is only on the basis of PHP user messages sent through the serial port on the added GET header,
did not add HEAD header and version information, if the user build their own PHP server, you need to use the
following message formats: