Description: Slide Projector: Advance Slide Projectors

Description: Slide Projector: Slide Advances, Fan Running; Projectors

Description: Slide Projector: Slide Advance; Projectors

Description: Slide Projector: Start, Fan Only, Shut Off; Projectors

Description: Slide Projector: Slide Up, Manual Projectors

Description: Slide Projector: Remove Tray; Projectors

Description: four spaced clicks of a slide projector.

Description: the hum of a slide projector motor running.

Description: single click of a slide projector.

Description: Slide Projector: Replace Tray; Projectors

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