quick question. is the main interface for lighting in the room supposed to be the rk? there is no lighting control interface? dependent on rti processor for all lighting in room sounds risky, but nevertheless.

you could use a xantech ir keypad wire it into the ir input of rp6

program your codes into t2c and make those buttons use ir trigger codes instead of rf

program xantech keypad and learn the trigger codes from t2c to corresponding buttons on keypad.

if your lighting control system has ir input capabilities you might be able to just use the xantech keypad by itself and not worry about tying it in to rp6