SIM800 HDK

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SIM800 Board Series Details

Net LED:

  • Off  SIM800H/L is not running 
  • 64ms On/800ms Off  SIM800H/L not registered the network 
  • 64ms On/3000ms Off  SIM800H/L registered the network 
  • 64ms On/800ms Off  GPRS communication is established

Ring LED: when module receives the call or a message, this LED will be off or Flash