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USR-GM3

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Introduction of Low Power Gsm Modules

The Low Power Gsm Modules, used for data transparent transmission. USR-GM3 is highly-integrated UART to GSM/GPRS module. Users can easily make communication with it among serial device, cellphone and network device. USR-GM3 is an embedded GSM module. It is designed for embedded system, and it is so small and convenient that you can integrate it to your system easily.

Features of Low Power Gsm Modules

  • Small and completed function GPRS DTU, transmission between serial and GPRS
  • Support GSM850/900,DCS1800/1900
  • Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network
  • Support 2 sockets, Support TCP and UDP
  • 4KB cache for each of sockets, user can choose to cache data or not
  • Support register packet and heartbeat packet
  • Support setting parameters via SMS message
  • Support 3 work modes: SMS transmission mode, network transmission mode and HTTPD mode
  • Support basic and extend AT command sets
  • Support class RFC2217, can dynamically modify serial parameter of module via network
  • Support flow control: RTS/CTS
  • Support RS485
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