???<p><span style=""><span style=""><strong>Arduino Compatible GSM Shield For Mega Leonardo ADK</strong><br /><br /><strong>Description:</strong><br /><br />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 QuectelM10 radio modem， you can communicate with the board using AT commands. This board is fully compatible with Arduino. The Arduino original GSM library has a large number of methods for communication with the shield.<br /><br />The shield uses digital pins 2 and 3 for software serial communication with the M10. Pin 2 is connected to M10 TX pin. Pin 3 to its RX pin. The modem&#39;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.<br /><br /><strong>Feature:</strong><br /><br />Allow AT commands<br />Support TCP / UDP and HTTP<br />GPRS data downlink and uplink transfer speed maximum is 85.6 kbps<br />Compatible with all Arduino main board<br />Can using SIM to making a call， sending message and connecting to GPRS<br />On-board antenna or SMA antenna<br /><br /><strong>Application:</strong><br /><br />Exchange data with your friends， robots or household appliances<br />Get temperature and humidity information when XBEE not applicable or there is no wireless &nbsp;<br />Alarm device<br />Cloud calculator<br /><br /><strong>Package included:</strong><br /><br />1 x Arduino compatible GSM shield</span></span></p><p style="text-align: center;"><br /><span style=""><span style=""><img alt="Arduino Compatible GSM Shield For Mega Leonardo ADK" src="http://img.banggood.com/images/upload/2012/lidanpo/SKU120339 (3).jpg" /><br /><br /><img alt="Arduino Compatible GSM Shield For Mega Leonardo ADK" src="http://img.banggood.com/images/upload/2012/lidanpo/SKU120339 (4).jpg" /></span></span></p>