Biamp E-VOL40, Rotary volume control, Wall-mounted, White, CE, RoHS, 40 W, 100 V Biamp E-VOL40. Type: Rotary volume control, Mounting type: Wall-mounted, Product colour: White. Power handling: 40 W, Input operation voltage (max): 100 V. Width: 80 mm, Depth: 50 mm, Height: 80 mm. Package weight: 336 g, Package type: Box. Quantity per pack: 1 pc(s)