You can check the SIM900 GSM GPRS shield on Maker Advisor and find the best price. Has microphone and headphone jacks for phone calls.Supports RTC (real time clock) – it has a holder for a 3V CR1220 battery at the back.Quad Band: 850 900 18 MHZ, so it should work in all countries with GSM (2G) networks.It has 12 GPIOs, 2 PWMs and buit-in ADC of the SIM900 module.Allows you to send SMS, MMS, GPRS and Audio via UART using AT commands.Here’s some of the most important features of the shield: Receive sensor data – send periodic SMS to your cell phone with daily weather data.Receive notifications – send SMS to your cell phone if movement is detected in your house.Remote control of electronic appliances – sending an SMS to turn something on.Its capabilities make it perfect for projects with Arduino like: Connect to the Internet over GPRS network.The GSM GPRS shield is particularly useful as it allows to: GPRS is a mobile service on the 2G and 3G cellular communication. GPRS stands for General Packet Radio Service. GSM stands for Global System for Mobile Communications and is the global standard for mobile communications. The SIM900 GSM GPRS Shield is shown in figure below. Making and answering phone calls – example.Learn how to send and receive SMS and how to make and receive phone calls with Arduino. This post is a complete guide to the SIM900 GSM GPRS Shield with the Arduino.
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