Data Sheet

GPRS Module iteadstudio.com 2011-12-06
3
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Hardware
Figure 1 Top Map
Interface
Pin
Description
Rst
1
Reset the SIM900 module
P
2
Power switch pin of SIM900 module
Tx
3
UART data output
Rx
4
UART data in
DT
5
Debug UART data output
DR
6
Debug UART data input
-
7
GND
+
8
VCC