USR IOT USR-GPRS232-730 - AT Command Syntax Overview

USR-GPRS232-730 User Manual h.usriot.com
Jinan USR IOT Technology Limited / 45 www.usriot.com
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4.2. AT Command Set
AT commands work in query-reply mode, “query” means device sends commands to module, “reply”
means module responds to device.
<Note>
Characters in command is case insensitive.
Symbol
Description
<>
content inside is necessary
[]
content inside is not necessary
{}
content inside is with particular meaning
~
range, for example, A~B means the range is from A to B
CMD
command code
OP
operator
PARA
parameter
CR
carriage return in ASCII, 0x0D in hex
LF
line feed in ASCII, 0x0A in hex