4-channel control with selector and 1.5 W, 8 ohm. Auxiliary audio input and headphone output. Digital volume control (31 steps), last volume memory, warning preference and “do not disturb” function. Bluetooth connection. Power supply 12 V DC, consumption 330 mA maximum. White RAL 9016 color. Dimensions 44 x 44 x 36 mm. Frameless. Flush mount in universal box.