The WMP controllers are a series of wall-mounted solutions aimed at remotely controlling system functionalities, such as zone level control and source selection. These passive controls are sharable over the network, meaning that a passive wall controller can be connected to one amplifier via GPI and control the parameters of other devices in the same network. The controller modules are designed to fit as single gang inserts in a Decora frame. Each box contains both the white and black pieces to simplify logistics.