SIM340DZ EVB User Guide
Figure 2: EVB BOTTOM view
A: SIM340DTE with SIM340DZ module interface
B: SIM card interface
C: headset interface
D: Download switch, turn on or off download function
E: VBAT switch, switch the voltage source from the adaptor or external battery
F: VCHG ON/OFF control (shifter S3)
G: PWRKEY key, turn on or turn off SIM340DZ
H: main and debug serial port
I: MAIN serial port for downloading, AT command transmiting, data exchanging
J: DEBUG serial port
L: source adapter interface
M: light
N: buzzer
O: headphones interface
Operating of module may interfere with medical devices like hearing aides and pacemakers.
Please always keep the module more than 20 centimeters away from such medical devices when
the module is powered on.
The module has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation.
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