NOTE: This product works for all devices with an IR frequency in the 33-43 kHz range only, for devices with a frequency in the 34-60 kHz range, see BlastIR by Sewell. Clean home theater set-ups (especially set-ups with wall-mounted HDTVs) can often require you to store your video equipment (like Blu-Ray players, DVD players, TIVOs, etc.) in a remote place like a closet or another room. Since your remote controls rely on line-of-site to control your equipment (in other words, it can't go through walls, it must be pointed directly at your equipment if you aren't using an extender), you won't be able to use them unless you can send this signal (known as infrared or IR) to your equipment with a wired extender. Sewell's IR extender kits provide all the parts you need in one convenient package to send an IR signal direct from your comfortable couch to wherever you store your equipment.This kit includes an IR receiver, a connecting block (which also serves as a signal repeater), and IR emitters. The IR receiver is a small inconspicuous device that you can mount on your HDTV's bezel or anywhere else in the room where you will want to point your remote. It is small and very easy to hide, but must be in line-of-site to your couch (or wherever you will be sitting when using your remote control). This receiver receives your remote control's commands and sends the signal over 3.5mm wire (same type of cable called mini-stereo) through the connecting block (which you can hide behind your wall).The connecting block then actively repeats and sends the same signal through all IR emitters connected to the block. Two emitters come with the kit and each emitter features two "eyes". Each eye blasts out the same IR signal, and you can tape them directly over each IR receiver on your equipment or simply fix them to an opposite facing wall (like the back of the door of your video closet for instance).