2N SmartGate - User Manual - Manual (Page 14)

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4.3. Automatic PIN Entering
You need not enter the PIN upon power up if it is stored in SmartGate – it is entered
automatically. This function is useful in case of power failure; SmartGate is operable in
a short time after power recovery without any intervention by the operating staff.
Caution! One PIN entering option is exhausted by the attempt to enter the PIN
automatically upon SIM card or PIN change. If wrong, the automatically entered PIN is
cleared from the internal memory to avoid another false attempt upon next power on.
There are still two manual PIN-entering attempts after such unsuccessful automatic
entering. To prevent the unsuccessful automatic PIN entering, delete or program
properly the SmartGate PIN using the PCManager in the case of SIM card change.