The Arduino GSM Shield 2 allows an Arduino board to connect to the internet, make/receive voice calls and send/receive SMS messages. The shield uses a radio modem M10 by Quectel. It is possible to communicate with the board using AT commands. The GSM library has a large number of methods for communication with the shield.
The shield uses digital pins 2 and 3 for software serial communication with the M10. Pin 2 is connected to the M10’s TX pin and pin 3 to its RX pin. See these notes for working with an Arduino Mega, Mega ADK, or arduino Leonardo. The modem's PWRKEY pin is connected to Arduino pin 7.
The M10 is a Quad-band GSM/GPRS modem that works at frequencies GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. It supports TCP/UDP and HTTP protocols through a GPRS connection. GPRS data downlink and uplink transfer speed maximum is 85.6 kbps.
To interface with the cellular network, the arduino board requires a SIM card provided by a network operator. The most recent revision of the board uses the 1.0 pinout on rev 3 of the Arduino Uno board.
Send/Receive command or data with your robots,household appliances or your friends
Get information like temperature or humidity when the distance was not suitable for wifi or Xbee
Make an alarm device when you are out
Work as a cloud calculator
make/receive voice calls and send/receive SMS messages easily for your robots or other device