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The Arduino GSM Shield allows an Arduino board to connect to the internet, make/receive voice calls and send/receive SMS messages. Just plug this module onto your Arduino board, plug in a SIM card from an operator offering GPRS coverage and follow a few simple instructions to start controlling your ..

SIM900A RS232 for PC or TTL microcontroller interface with DTMF active feature. The GSM/GPRS Cellular Module for Microcontrolles/ Embedded Systems/ Home automation is complete in all respect ready to plug-in interface for your microcontroller(Arduino,Raspberry pi, Atmega, PIC, Basic Stamp, 8051..

SIM900A RS232 for PC or TTL microcontroller interface . The GSM/GPRS Cellular Module for Microcontrolles/ Embedded Systems/ Home automation is complete in all respect ready to plug-in interface for your microcontroller(Arduino,Raspberry pi, Atmega, PIC, Basic Stamp, 8051, AVR etc) with an SIM90..

The SIM800L module supports quad-band GSM/GPRS network, available for GPRS and SMS message data remote transmission. The SIM800L communicates with microcontroller via UART port, supports command including 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands. It also has built-in level translation,..