You DO NOT need to fill out any forms anymore to order Matrix Products. All keypads and remotes are preconfigured and also come with a few extra buttons. The difference between a Delta and Mi Series remote control is the cover. IR codes are the same on both remotes.
Preconfigured Keypad button configuration.
KP-4e Tuner, Sat, CD, AUX (He belives this also comes with MP3 and DVD in the box)
KP-6e Tuner, Sat, CD, AUX, MP3, DVD
There are NO KP-8e. They automatically receive an LCD Keypad.
Same buttons on the remotes.
Extra buttons can be purchased from the price sheet.