http://www.usa.canon.com/cusa/support/professional/projectors_visualizers/projectors/lv_7585?pageKeyCode=writeReviewPage
LV-7585
16040
Features
PIN Code for Operational Lock
A PIN Code Lock ensures that only authorized users are able to start and operate your LV-7585. At start-up, a display will appear and prompt the user to enter a password that you set in advance.
A Key Lock function locks the keys on projector's control panel or remote control, preventing accidental interruptions in your presentation.

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