Line of sight is not required with this remote, as it comes with an RF extender unit which allows devices to be controlled up to 30 meters away. The Harmony 895 features a rechargeable and a charger dock. This universal remote can control up to 15 devices simultaneously, including a wide range of TVs, digital set-top boxes, DVRs, Satellites, DVD players, VHS machines, amplifiers, game consoles, media center PCs and more. Logitech’s remote can be updated over USB 2.0 to support new hardware devices at any time via the manufacturer’s website, which is accessible through the included installation CD. The Logitech Harmony 895 supports Windows 200/XP/Vista and Mac OS X 10.3 or later.