Reference:
Y4770L
Remote control switch panel with 4 interlocking selection switches and 2 momentary switches. Connecting it to the 9000 series amplifier's control input terminal permits various controls such as BGM source selection and the sound volume adjustment. It can be mounted in an American standard 2-gang electrical box in the wall. Dimensions: 127 x 127 x 53,3 mm. Weight: 80 g.