https://www.pantechsolutions.net/wireless-boards/sim900a-gsm-modem
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https://www.pantechsolutions.net/wireless-boards/sim900a-gsm-modem
Continue reading »TO CHECK THE MODEM: AT OK TO CHANGE SMS SENDING MODE: AT+CMGF=1 OK TO SEND NEW SMS: AT+CMGS=”MOBILE NO.” <MESSAGE
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