The Designer Micro Link IR kit makes it possible to control up to four different audio and video components behind solid doors or walls using your existing IR remote. The included Micro Link peep hole style IR receiver was designed for mounting in walls, ceilings, wall speakers and other very small spaces and has been engineered specifically to resist IR interference caused by LCD TVs, CFLS and sunlight. It includes a white, brass and black bezel to blend in with your existing décor. The included connecting block supplies power to the IR receiver using the included power supply. The connecting block receives IR signals coming from the IR receiver and distributes the IR signals out to your audio and video components using the included designer IR emitters.