Cue light systems is light and sound signaling system that enables speaker to send cues to projectionist using wireless hand-held actuator or to remotely control presentation software via dual programmable USB ports. It is designed to facilitate integration with belt-pack headsets. 4-pin in-out XLR jacks allow cue light to be interposed between belt-pack and headset. Two-way intercom communications pass through unchanged except cue light sounds are added to reception. It is volume controllable. It includes one transmitter, 12V external power supply,  2 USB cables and shipping/carrying case.