Controlling your TV equipment “behind the wall” can be little tricky. Regular IR extenders available on the market are not very dependable. It is kind of “hit and miss” game. Since you have to direct your remote straight on the “eye” of the IR receiver the remote commands may not reach the target at the same time and in effect the desired remote command may not be executed. MX-450 remote control and MRF-350 RF receiver is the best and most economical solution for “behind the door” remote control. It is simple to operate and very dependable. When programmed by our technician it will give the user many years of use. It simplicity and easy operation is legendary.