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SIM808 module instead of 908 GSM GPRS GPS positioning SMS data sent to STM32.51 program - AliExpress
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SIM808 GSM + GPRS + GPS Cellular Module : ID 2637 : $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Waveshare Gsm/gprs/gps Shield (b) Shield Based On Sim808 Comes With Eu Plug Power Adapter - Demo Board - AliExpress
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SIM808 GSM + GPRS + GPS Cellular Module : ID 2637 : $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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