GPRS module is a breakout board and minimum system of SIM900 Quad-band/SIM900A Dual-band GSM/GPRS module. It can communicate with controllers via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands). This module supports software power on and reset.

Applications:

The GSM GPRS shield is particularly useful as it allows to:

• Connect to the Internet over GPRS network
• Send and receive SMS
• Place and receive phones calls

Its capabilities make it perfect for projects with Arduino like:

• Remote control of electronic appliances – sending an SMS to turn something on;
• Receive notifications – send SMS to your cell phone if movement is detected in your house;
• Receive sensor data – send periodic SMS to your cell phone with daily weather data.

Features

Here’s some of the most important features of the shield:

• Compatible with Arduino and clones
• Based on SIM900 module from SIMCOM
• Allows you to send SMS, MMS, GPRS and Audio via UART using AT commands.
• It has 12 GPIOs, 2 PWMs and buit-in ADC of the SIM900 module
• Quad Band: 850; 900; 1800 and 1900 MHZ, so it should work in all countries with GSM (2G) networks
• Control via AT commands
• Supports RTC (real time clock) – it has a holder for a 3V CR1220 battery at the back

• Has microphone and headphone jacks for phone calls