This video only showcases the 4-Channel and 2-Channel RC4Magic devices.

RC4Magic-900 devices have blue/black labels and operate in the 900MHz RF band.  Note: blue with gradation to black, and black with a blue bar (SX) are identical systems, only the label design has changed.

RC4Magic 2.4GHz devices have purple labels and operate in the 2.4GHz RF band. Note: purple label without gradation to black, and black with a purple bar (SX) are identical systems, only the label design has changed.

All RC4Magic Series 2 and Series 3 devices are compatible and can communicate with each other wirelessly.

The functionality of all 4-channel dimmers is essentially the same.

There are some variations in the two channel dimmers since there are fewer buttons on the units.

The design of the  user interfaceUser interfaceThe user interface (UI) is the physical hardware on a device that users interact with to configure settings, enable and disable features, see operational status, and more.  The user interface on most small RC4 devices is comprised of recessed buttons and small LED indicators.  More complex devices may use rotary controls, touch screens, and more.
Read more » and how to get to the functions is identical, this is part of RC4 Series 3 Harmonized Design™.