1、Simple Operation: 2 VU meters and 1 driver board, you don't have to worry about finding the right driver and wiring. Our combination wiring operation is simple and can be easily used by novices. 2、Features: One driver board can control two VUs, 3 potentiometers have a clear division of labor, can adjust the brightness of the backlight, and adjust the amplitude of the pointer swing, which is a good helper for the recording engineer. 3、Scope of Applications: With backlight electronic amplifier, the VU meter can read clearly in dim environment, suitable for DIY, home audio, car audio conversion, etc. 4、ABS and PCB Material: The power amplifier VU meter is made of ABS and PCB materials, which is environmentally friendly and durable, with long service life. 5、Good Performance: The VU meter's professional manufacturing, exquisite workmanship and high accuracy help to provide the best performance. Item Type: VU Level Meter Product Material: ABS, PCB Gross Weight: 162g / 5.7oz Inductance: 112uA±10% Internal DC Impedance: 2.3KΩ±10% Insulation Resistance: More than 50MΩ Friction: ±1mm Pointer Length: 17.3±1mm / 0.7±0.04in from needle end to axis Pointer Width: 0.45±0.05mm / 0.02in±0.002in Installation Position: Vertical Backlight: 1.8-2.6V Yellow Scope of Application: Suitable for DIY, recording studio, medical equipment, etc. 2 x VU Meter 1 x Driver Board 6 x Cable Arrangement 1 x Audio Cable 1 x Manual