Arduino GSM Shield with Integrated AntennaQuad band GSM Arduino GSM shield It is recommended that the board be powered with an external power supply that can provide between 700mA and 1000mA. The Arduino GSM Shield allows an Arduino board to connect to the internet, make receive voice calls and send receive SMS messages. The shield uses a radio modem M10 by Quectel (datasheet). It is possible to communicate with the board using AT commands. The GSM library has a large number of methods for
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