First thing I need to say is that make sure you buy another coaxial female to male cable or male to male with a female adapter. You will need this cable to make this work, it does not come with one.
The product itself is great, however there are no instructions with it. Its not so much of an issue if you look on the internet and search "how to set up sky magic eye" a large volume of people have written the instructions. I will detail them also below though aswell.
Once received you will need to plug the coaxial cable (as detailed at the top) from the RF2 output into the back of the new TV (on my box the connection at the bottom not the middle) and change your sky box settings to give power via the RF2 output. This is the reason why you need to use that particular socket, as it is the only one socket that can give power to the magic eye aswell as the TV signal.
To set it up to send power via the RF socket you simply need to press in quick order on your sky remote, Services > 4 > 0 > 1 > Select. You wont see anything on the screen change until you have finished entering the buttons and when you do finish a screen will come up called "installer menu". Go down to RF Outlets, then turn the RF Outlets Power Supply from Off to On. When you have it set up correctly the light on the connection part of the magic eye should glow red and the eye should work!
Bare in mind the quality of the picture you get will by no means be High Definition, it will probably be a bit worse than the quality of the tv the box is connected to due to split signal but it is by no means unwatchable and a very cheap alternative to get tv in 2 rooms with ability to change channel in either.