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GM28 INTEGRATOR’S MANUAL
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LZT 123 7468 P1A
2.4 SIM Card Reader
The GM28 is fitted with a SIM card reader designed for 3V and 5V SIM
cards. It is the flip-up type which is lockable in the horizontal position
and is accessed through a removable panel as shown below.
The SIM card reader includes a SIM presence switch. This ensures that
when a SIM card is inserted or removed while the GM28 is turned ON,
it will reset.