Also, Remember the QSE-IO is not as flexible as many make out. The outputs follow the scenes in blocks of five and cannot be reconfigured. The inputs do the same when set in scene mode so you cannot have the five inputs selecting scenes 3, 6, 7, 9 & 10 so think a bit more carefully about your scene number allocation prior to programming it all. The QSE-IO does not have any programming it simply follows the information given to it on the data bus and set by the DIP switches. And one final point... It uses two or three module power units so if you already have a remote keypad you may need to get yourself an external power supply! Good luck!