Features 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. Specifications Item Type: VU Meter Product Material: ABS, PCB Maximum Current Sensitivity: 1mA±10% Internal DC Impedance: 100Ω±10% Insulation Resistance: More than 50MΩ Friction: ±1mm Pointer Length: 70±1mm from needle end to axes Pointer Width: 0.45±0.05mm Meter Installation: Vertical Backlight: Blue backlight 3-3.2V 80mA Scope of Application: Suitable for DIY, recording studio, equipment, etc. Weight: 392 g / 13.8 oz(approx.) Package List 2 x VU Meter 1 x Driver Board 6 x Cable 1 x Audio Cable 1 x User Manual