The PL-4 is one of several remote control devices available for the iDR audio mix processor system. It is part of the Allen & Heath PL Series of wall plates and remote controllers. It is a wall plate or furniture mounted module comprising plastic control panel and attached circuit assembly. It can be mounted in a single unit wall box using a standard face plate (UK, EU or US version supplied). A suitable template with cutting details is provided for custom application. The PL-4 interfaces with the Allen & Heath PL-Anet serial port. Multiple PL-4 units can be daisy chained together along with other PL-Anet devices using CAT5 cable. The wall plate control and indicator functions are programmed using the iDR System Manager software. Space is provided on the control panel for custom labelling. The PL- 4 is ideal as a wall mounted room remote controller in installed audio systems. The installer can program the unit so that the non-technical operator has local control of volume, mute, source select, and preset changes which reconfigure the room for different functions, as well as the convenience of the PL-5 infrared remote controller.