User's Manual

SIM840W EVB User Guide
SIM840W-EVB_UGD_V1.00 7 2011-06-22
Figure 2: EVB BOTTOM view
A: Source adapter interface
B: MAIN serial port for downloading, AT command transmitting, data exchanging
C: DEBUG serial port
D: SIM card interface
E: Test point interface
F: Antenna fix hole
G: SIM840W-TE with SIM840W module interface
H: Module fix hole
I: Reset key ( reset the module )
J: Power key ( module ON/OFF control )
K: Charge switch ( charge ON/OFF control )
L: Download switch ( download control )
M: Power switch ( power ON/OFF control )
N: Headphones interface
O: Headset interface
P: Line in interface
Q: Status light