This item is available from several retailers. I noticed that if you want more than one you can ask to have it altered to a different IP address. This chap offered to do that for me after I had recived yhe item, so I duly despatched it back. It took a lot longer for Roy7al Mail to get it to him, but I recived the item back 1 working day after he recived it. I have found the software to be easy to use , and a lot better than the other controllers I was using.