1、PERFECT MATCHING: 2 VU meters and 1 driver board, you have no need to worry about finding the right driver and wiring 2、SIMPLE TO USE: This combination wiring is easy to operate, even beginners can easily get started, very convenient 3、HIGH EFFICIENCY: One driver board can control two VUs and three potentiometers. Clear division of labor, efficient and time saving 4、ADJUSTABLE VARIOUS PARAMETERS: Meter can adjust the brightness of the backlight and the amplitude of the pointer swing, which is a good helper for the recording engineer 5、WIDE APPLICATION: Come with backlight, can read clearly in dim environment, suitable for DIY, home audio, car audio conversion, etc. 2 x VU Meter1 x Driver Board6 x Cable1 x Audio Cable1 x User Manual Item Type: VU MeterProduct Material: ABS, PCBMaximum Current Sensitivity: 1mA±10%Internal DC Impedance: 100Ω±10%Insulation Resistance: More than 50MΩFriction: ±1mmPointer Length: 70±1mm from needle end to axesPointer Width: 0.45± 0.05mmMeter Installation: VerticalBacklight: Blue backlight 3- 3.2V 80mAScope of Application: Suitable for DIY, recording studio, equipment, etc.Weight: 392 g / 13.8 oz(approx.)