These devices broadcast an IR grid that is seen by the cameras located on the other Vive accessories. They have 3 channels they can be set for: A, for single Lighthouse usage, which does not support roomscale and channels B & C are used to create Roomscale, being positioned in opposite corners.
The Lighthouses have screwplates on the back and bottom, and include a mounting plate. They can also be used with standard camera tripods.
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