The Harmony RF-EXT is a RF Wireless Extender with a 100 foot range. This allows you to place your components almost anywhere in your home. Conceal components in cabinets, and the RF-EXT will still be able to send singals to them with ease. No Set up is necessary. Just plug it in, and it syncs with the remote automatically. Harmony remotes work with over 225,000 devices, and over 5000 brands.