User's Manual

Confidential Document
Page 7 of 28
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The following figure shows the internal connectors and its functionality.
 SIM Socket:
The AS3/AS3E supports a SIM card with either of these two operating voltages: 1.8V (ISO/IEC 7816-3
class C) or 3V (ISO/IEC 7816-3 class B).
 RS232 Switch:
The pin#3(Green) and pin#5(White) of power I/O connector can be used for either general I/O or RS232.
The RS232 switch is used for the configuration. See table below for detail description:
Mode
Switch setup
Description
RS232 Mode
Pin#3(Green) and Pin#5(White) are acting as RS232 Tx and Rx.
This is manufactory default mode.
I/O Mode
Pin#3(Green) and Pin#5(White) are acting as general I/Os.
SIM Socket
RS232 Switch
PWR LED
GPS LED
3G LED
Battery connector
I/O Connector
Power off the device and make sure the wire connection before adjust RS232 switch.