Instruct: Classify an Amazon review as either positive or negative.
Query: Very unreliable and poor construction. Cheap solution to an expensive problem.

If you want the capability of a RF remote, you are better off just paying the money for one. This device, while clever, is not reliable. It will work maybe every third time you hit the button. This becomes particularly annoying when, for example, you are watching a recorded show and cannot get your DVR to stop fast-forwarding because the remote won't register. The device receiver is in a cabinet less than 10 feet from the box, so distance is not the issue. I have also placed the blaster (which initially broke and had to be replaced at my expense) right over the IR receiver. Live and learn, I suppose.