The Global iO-LINK creates a tvLINK enabled RF output/modulator for the new Sky HD and Sky+HD digiboxes with no RF2 output. Once installed via the iO-port, the iO-LINK can be connected to an in-home distribution system for viewing at multiple TV locations.
Don't forget that to control the Sky digibox from from the other television/room, you will need a magic/remote eye and possibly a spare remote control too.