Arduino GSM Shield with Integrated Antenna

The Arduino GSM Shield 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 (datasheet). 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 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 board requires a SIM card provided by a network operator. See the getting started page for additional information on SIM usage.

The most recent revision of the board uses the 1.0 pinout on rev 3 of the Arduino Uno board. Notes on the Telefonica/Bluevia SIM included with the shield

The GSM shield comes bundled with a SIM from Telefonica/Bluevia that will work well for developing machine to machine (M2M) applications. It is not necessary to use this specific card with the shield. You may use any SIM that works on a network in your area. The Bluevia SIM card includes a roaming plan. It can be used on any supported GSM network. There is coverage throughout the Americas and Europe for this SIM, check the Bluevia service availability page for specific countries that have supported networks. Activation of the SIM is handled by Bluevia. The SIM must be inserted into a powered GSM shield that is mounted on an Arduino for activation.

Arduino board not included.

Additional info: http://arduino.cc/en/Main/ArduinoGSMShield