
A cue light is a system of one or more electric light bulbs (usually traffic light colors) used to allow silent cues to be given to technicians and performers at various working locations during the running of a show. Typically, the Deputy Stage Manager (UK) or Stage Manager (US) sends signals to these cue lights at pre-arranged times. Sometimes t...
Found on
http://en.wikipedia.org/wiki/Cue_light

Cue button on lectern, which generates a signal to the technician who moves on the slide.
Found on
http://www.encyclo.co.uk/local/20523

Box with 2 or more lights, usually red and green, to warn an actor or technician to go to stand-by and then do whatever is required. Ensures greater precision when visibility or audibility is limited.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

A device which allows cues to be passed by means of illuminating lamps.
Found on
https://hdos.org.uk/gen/glossary.html
No exact match found.