The WPD-MIX42RT is a decorative style wall plate designed for remote activation of the TSD-MIX42RT microphone/line mixer. The WPD-MIX42RT features a sliding audio source selector as well as a source volume control. The unit includes an LED indicator to indicate which source is selected and whether it is active. The unit fits into a single-gang electrical receptacle and utilizes an 8-conductor interface connection that includes a removable 4-position Phoenix connector and dual 2-position Phoenix-style connectors. When connected to the TSD-MIX42RT and Juke Box Override, any call made through the system will override the selected source so the call can be heard clearly.