1、Contains 2 VU meters and 1 drive board, wiring operation is simple, easy to use. 2、The division of labor is clear, one driver board can control 2 VUs and 3 potentiometers. 3、It can adjust the brightness of the backlight and the amplitude of the pointer swing, a good helper for the sound engineer. 4、With backlight display, it can be read clearly in dim environment, easy to use. 5、Wide application range, suitable for DIY, home audio, car audio conversion, etc. Item Type: VU Meter Material: ABS+PCB VU Meter: Inductance: 112uA±10% Internal DC Impedance: 2.3KΩ±10% Insulation Resistance: >50MΩFriction: ±1mm Pointer Length: 17.3/0.68in±1mm/0.04in from the needle end to the axes Pointer width: 0.45/0.018in±0.05mm/0.002in Installation Position: Vertical Backlight Board: 1.8-2.6V 20mA Yellow Driver Board: Power Supply: AC/DC 12-16V ≥5W Signal Input: ≤0.775V Backlight Power Output: 1.25V-11V 50mA Size: Approx. 50 x 60 x 25mm/2 x 2.4 x 1in 2 x VU Meter 1 x Driver Board 6 x Flat Cable