This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 The WCU300 is a stylish control keypad designed for the Opus 300 system which can also be used in as a sub-zone keypad within Opus 500 installations. Working on the A-BUS standard, installation is extremely simple with just one Cat5 cable connection needed to the DZM amplifier and then standard speaker cable to the loudspeakers.