Features: 1Simple 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. 2Features: 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. 3Scope of Applications: With backlight electronic amplifier the VU meter can read clearly in dim environment suitable for DIY home audio car audio conversion etc. 4ABS 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. 5Good Performance: The VU meter's professional manufacturing exquisite workmanship and high accuracy help to provide the best performance. Specification: Item Type: VU Level MeterProduct Material: ABS PCBGross Weight: 162g / 5.7ozInductance: 112uA10%Internal DC Impedance: 2.3K10%Insulation Resistance: More than 50MFriction: 1mmPointer Length: 17.31mm / 0.70.04in from needle end to axisPointer Width: 0.450.05mm / 0.02in0.002inInstallation Position: VerticalBacklight: 1.8-2.6V YellowScope of Application: Suitable for DIY recording studio medical equipment etc. Package List: 2 x VU Meter1 x Driver Board6 x Cable Arrangement1 x Audio Cable1 x Manual