Optoma TX615-3D User Manual page 38

User Controls
SETUP | Security
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Security
On: Choose "On" to use security verification when the turning

on the projector.
Off: Choose "Off" to be able to switch on the projector without

password verification.
Security Timer
Can be select the time (Month/Day/Hour) function to set the
number of hours the projector can be used. Once this time has
elapsed you will be requested to enter your password again.