A9 GSM/GPRS breakout board
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This GPRS GSM breakout board based on the AI-Thinker A9, which it a newest GSM GRPS Quad-Band module. You can add voice, text, SMS and data to your project with this module. It is high cost performance compare with SIM800, SIM900. A9 is an ideal solution for M2M applications, suitable for automotive, industrial and PDA, personal tracking, electricity environment detection, wireless POS, smart metering, and other M2M applications , to provide comprehensive GSM / GPRS text messaging, voice and data transmission services.