The Cambridge Qt® Room Control Qt-RC3 can be used to adjust the sound masking level for an individual room or a space with up to 8 Emitters or 14 Active Emitters. This version of the wall-mounted volume control unit is designed to work with Qt 300 and Qt 600 Cambridge Sound Management sound masking systems only. It installs easily in new or existing construction and fits in most standard electrical boxes, including open back, low voltage brackets. The Qt Room Control controlled room can be its own run from the controller or part of a run to other areas.