Bosch LBC1400/10. Type: Rotary volume control, Mounting type: Wall-mounted, Product color: White. Frequency range: 50 - 20000 Hz. Power handling: 12 W, Input operation voltage (max): 100 V. Width: 3.43" (87 mm), Depth: 3.43" (87 mm), Height: 1.8" (45.6 mm)