The Touch panel controllers from Neets is 4 products, but here the rack units are shown, since the SieRRa II is covered in the keypad article.
LiMa and TanGo share the same form factor, whereas the AlFa II is a full 1U rack unit. The LiMa and TanGo are ½ rack width and there is a rack shelf fitting them and the Neets amplifiers together side by side.
Usually the LiMa and TanGo are mounted behind a TV, underneath a table or up under a dropped ceiling, this is achieved through the protruding holes in the cabinets and a plus is that the plugs and screws are included in the packaging.
Watch this video to understand the touch panel controllers and their differences.
The comparison chart from the video: