The easiest way to turn off the lights on a VisualTarget enclosure is to go to:
magtarget.com/color
From the tablet inside the enclosure and press on the "Start" button.

Alternatively you can use the files below depending on the vintage of your enclosure.

Depending on the vintage of your tablet enclosure, playing one of the following file from the enclosure will disable the lights.

These files should be played from the tablet inside the enclosure. 

Units shipped after Q1 2019 (6,005 Hz):

Units shipped prior to Q1 2019 (2,000 Hz):

Note: You should not be hearing any sounds when playing these files from the tablet. If you do this mean the audio cable is not properly installed in the tablet.

Alternatively you can enter the frequencies specified below in your meeting scheduling admin dashboard.