2.4SIM Card Reader

The TT4031 (SE-GM29) is fitted with a SIM card reader designed for 3 V and 5 V 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 TT4031 (SE-GM29) is turned ON, it will reset.

Owner’s Manual

Rev 1.0

Page 33 of 33