How to Install a Projector 12 Volt Trigger

Written by david lipscomb Google
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How to Install a Projector 12 Volt Trigger
Using a projector as the 12-volt triggering device is useful to controlling a screen. (Work presentation image by Rido from

12-volt triggers are used to activate accessories and other devices connected to a main hub. Often, these hubs act as audio/video receivers, external switches or other processors. Once activated, the hubs send a small signal to the connected device to trigger an action. For projector screens, the trigger allows the projector's activation to dictate the extension and retraction of the screen.

Skill level:

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Things you need

  • Projector
  • Motorised screen
  • 12 volt trigger cable

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  1. 1

    Access the rear panel of the projector. If necessary, remove the snap-on cover that protects the audio/video cable connections and other inputs.

  2. 2

    Plug in the 12-volt trigger cable the jack marked "12v." This jack is typically a 3.5 millimetre plug-style connection, similar in appearance to a small headphone jack.

  3. 3

    Route the trigger cable to the corresponding connector on the screen's housing. Plug the cable into this jack.

  4. 4

    Turn on the projector to activate the trigger, and cause the screen to descend. Turn the projector back off to make the screen retract.

Tips and warnings

  • Although wiring the trigger is rather easy, the screen still requires 120 volts AC for the motor.

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