Optoma EH415ST User Manual page 38

User Controls
Security Timer
Enter the Security Timer sub menu.
Enter the Months, Days, and hours that the projector can be
used without entering the password. Exiting to the Setup menu
activates the Security Timer.
Once activated, the projector requires a password on the
specified dates and times to allow power on and access to the
security menu.
If the projector is in use and the Security Timer is active, the
following screen displays 60 seconds before the password is
required.
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