Siretta LC300-GPRS

GPRS self managing modem

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Key Features
  • Smart, self managing modem
  • Auto detection of networks
  • Agnostic of connected equipment / operating system
  • Automatically delivers all data presented to it
  • Adds GSM connectivity to dumb equipment - simply
  • Automatically connected cellular connection
  • Simple to set up and configure via text commands
  • RS232 to GPRS DTU

The linkCONNECT LC300 series of self managing modems makes connecting over the 2G network simplicity itself. The Siretta linkCONNECT software does all the hardwork for you and is easy to configure and work with. when connected to your equipment the LC300 series will auto negotiate and connect to any network and reboot as necessary to maintain connectivity to the internet and / or be monitored / controlled from anywhere in the world.

The LC300 is truly 'plug-n-play' in that it requires no set up and is protocol transparet. Connect your equipment to an LC300 and any data it produces is transmitted automatically over the cellular network to the user or server as set up. The LC300 can also be operated in Client or Server mode.

LinkConnect Client Mode 
In the Client mode LC300  acts as a client, simply connecting the terminal to a remote server at a pre-specified IP address and port. It can either be setup as ‘always connected’, or to connect only when data is received on the serial port. Once set up, the LC300 needs no further intervention to remain in full client mode. 

LinkConnect Server Mode 
In the Server mode LC300 acts as a server, where the terminal listens for incoming connections from a remote client on a specified port. Additionally a source IP can be specified, and only connections from this IP will be accepted.  


Electrical Specifications 


  • RS232 Serial Port
  • USB  for GPIO ports
  • SIM:1 x (3V& 1.8V) 
  • Antenna Interface: SMA Female 

Operating specifications:

  • Storage temperature Range: -40 to +85°C
  • Operating temperature range: -30 to +75C˚ 
  • Power Supply: 5-60V @ 2A peak, 250mA average 


Cellular Interface:

  • 2G - 850, 900, 1800, 1900MHz



  • Length: 93mm
  • Width:67mm
  • Height: 28mm


For GPIO via USB socket details - see ZETA-N-GPRS product data


  • LC300 3G self managing modem
    LC300 3G self managing modem
  • LC300 Interface
    LC300 Interface
  • LC300 modem antenna and power
    LC300 modem antenna and power
  • LC300 Side
    LC300 Side
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