CMU GPRS/GSM SHIELD SIM900

The SIM900 GSM/GPRS Shield provides you a way to use the GSM cell phone network to receive data from a remote location. The shield allows you to achieve this via any of the three methods

• Based on SIMCom's SIM900 Module
• Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world.
• Control via AT commands - Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands.
• Short Message Service - so that you can send small amounts of data over the network (ASCII or raw hexadecimal).
• Embedded TCP/UDP stack - allows you to upload data to a web server.
• Speaker and Headphone jacks - so that you can send DTMF signals or play recording like an answering machine.
• SIM Card holder and GSM Antenna - present onboard.
• 12 GPIOs, 2 PWMs and an ADC (all 2.8 volt logic) - to argument your Arduino.
• Low power consumption : 1.5mA(sleep mode)
• Industrial Temperature Range : -40°C to +85°C