Follow the instructions for syncing the remote to the wireless extender. This allows the remote to communicate to the wireless extender via RF codes. The wireless extender must be within 6 feet of your components, so the IR emitter wires can be attached to the IR window on each component. The wireless extender converts the RF codes from the remote into IR codes that each component can interpret. Since the wireless extender is receiving RF codes, it can be positioned behind a wall if necessary, as long as the emitter wires will reach the components.