SIM900 GSM_GPRS Module Shield


12-08-2020 à 13:51



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SIM900 GSM/GPRS shield is based on Quad-Band SIM900 GSM/GPRS module. It
provides Arduino with GSM/GPRS function.
This shield allows you to make voice calls, send SMS or make connections to the
Internet network.
On the shield, there is a serial port toggle switch for you to select either software serial
port or hardware serial port to be connected to GPRS Shield.
If you choose software serial port, you need to use the Software UART; otherwise,
you need to use the Hardware UART

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