Overview - RDL SIM900A User Manual

Overview

GPRS /GSM SIM900A MODEM WITH ARDUINO COMPATIBLE
This is a very low cost and simple Arduino GSM and GPRS shield. We use the module
SIMCom SIM900A.
The Shield connects your Arduino to the internet using the GPRS wireless network. Just
plug this module onto your Arduino board, plug in a SIM card from an operator offering GPRS
coverage and follow a few simple instructions to start controlling your world through the
internet. You can also make/receive voice calls (you will need an external speaker and
microphone circuit) and send/receive SMS messages
There are two modules
1. GSM SHIELD WITH STACKABLE UNO HEADERS ON BOTH SIDES(WITH
NOMIC AND SPEAKER)
2. GSM SHIELD WITH SINGLE UNO HEADERS WITH MIC AND SPEAKER
www.researchdesignlab.com
GSM GPRS SIM900A MODEM
REV1.0
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