Contents
Overview ......................................................................................................................................... 3
Features ........................................................................................................................................... 4
Datasheets ....................................................................................................................................... 4
GSM AT Commands: ................................................................................................................. 5
GPRS Commands: ...................................................................................................................... 6
MODULE SETUP .......................................................................................................................... 7
SAMPLE CODE: ........................................................................................................................ 8
POWER MODES............................................................................................................................ 9
Power down mode....................................................................................................................... 9
Sleep mode .................................................................................................................................. 9
BLOCK DIAGRAMS ................................................................................................................... 12
................................................................................................................................................... 13
CODE ............................................................................................................................................ 14
MODULE HANDLING ............................................................................................................... 15
DO'S AND DONT'S ................................................................................................................. 15
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GSM GPRS SIM900A MODEM
REV1.0
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