GPRS Quadband Shield
GPRS Quadband Shield description:
The GPRS Dualband Shield uses the HiLo SAGEM communication module to allow GPRS communications for Arduino. You can send your data by SMS or do missed calls from your Arduino to mobile devices, or to another Arduino connected to this module.
GPRS Quadband Shield specification:
GPRS Quadband Shield pinout:
Not sure which pins are used: schematic is not very clear.
For more detail: GPRS Quadband Shield
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