PRODUCT SPECIFICATION The GPRS Shield is based on the SIM900 module from SIMCOM and compatible with Arduino and its clones. The GPRS Shield allows you to communicate via the GSM mobile phone network. The Shield allows you to obtain SMS, MMS, GPRS and Audio via UART by sending AT commands (GSM 07.07, 07.05 and improved AT commands SIMCOM). The Shield also contains the 12 GPIOs, 2 PWMs and an ADC of the SIM900 module (they are all 2V8 logic). Descriptions: 1.Quad-Band 850/900/1800/1900 MHz - would work on GSM networks in all countries of the world. 2.GPRS multi-slots class 10/8. 3.GPRS class B mobile station. 4.Compatible with the GSM 2/2 + phase. 5.Class 4 (2 W at 850/900 MHz). 6.Class 1 (1 W at 1800 / 1900MHz). 7.Control via AT commands - Standard commands: GSM 07.07 & 07.05 | Improved commands: SIMCOM AT commands. 8.Short Message Service - so you can send small amounts of data over the network (ASCII or raw hexadecimal). 9.Built-in TCP / UDP stack - allows you to upload data to a web server.
