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Open the System Setup Menu by pressing the front panel green ''Enter'' button so that you read ''Main Menu'' on the top line of the display. Press the number ''3'' and the flashing lower line will read ''System Setup Menu'' then press the ''Enter'' button again. Press the number ''9'' and the flashing lower line will read ''Security Options'' then press the ''Enter'' button again.
Setting the Passcode for the first time ==
Something similar to the following screen will appear.
Type a 4 digit number you will remember.
Changing the Passcode==If there is already a passcode on your unit the following screen will appear (with the text in bold flashing).
==Turning the Auto-lock Feature on==