Watch Sky In Any Room! This Unit Sends Remote Control Signals From The "magic Eye" Back To The Satellite Receiver Via The Same Coaxial Cable That Is Sending The Pictures To The Additional Tv. It Operates Between The Rf2 Output On A Satellite Receiver (from Which It Receives Power) And An Additional Tv. Full Menu Instructions Included Attractive Silver Finish 850mm Lead Between Main Unit And The "magic Eye" Led Indicator