House Code - press and hold the set button and top of the paddle switch for 3 seconds.  LED on left of switch will show the house code.  Keep set switch pressed in and use switch top and bottom to adjust house code.  LED shows code in binary - bottom LED only = A, second LED only = B, first and second LED lit  C, etc.
Room Code - same as above but press bottom of rocker switch while holding set button to enter programming.