Control module with 4 channels and audio output of 1.5 W, 8 ohm. Auxiliary audio input and headphones socket. Volume control (31 steps), memory of last volume. Priority paging and function "do not disturb" . Power supply 12 V DC, 330 mA maximum consumption. White RAL 9016. Dimensions 44 x 44 x 36 mm. Without frame. Flush mount on universal box.