A:
It communicates via RF to the hub. The hub then blasts IR signals to your devices. The beautiful part about this remote is you don't need a bunch of blasters taped to each device. They claim it bounces IR off of walls, furniture, etc. to get it to your device. In my setup I have my stereo, cable box, dvd, and VCR in a cabinet with glass doors. The hub sits directly on top of the cabinet without a direct line of sight to any of the devices and it works incredibly well and without delay. In theory you could have the blaster in a closed cabinet and it would still work. One IR blaster is included in the package to control devices outside of a closed cabinet.