Function: 1. With its backlit display, it can be clearly read even in dark environments. 2. The VU meter is equipped with a control board that is compact and easy to carry. 3. Wiring is simple, operation is easy, and wiring can be used on time. 4. Wide application, suitable for DIY, home audio equipment, car audio conversion, etc. 5. The control board can adjust the brightness of the backlight and the amplitude of the indicator movement. Specification: Item Type: VU Meter Material: ABS + PCB Kolor: as shown in the figure Meter size VU: approximately 15,5x4,8x3 cm/6,1x1,9x1,2 inch Driver board size: about 6x5x2,5 cm/2,4x2x1in VU meter: Current Sensitivity: 500uA ± 10% Internal DC Impedance: 650 Ω ± 10% Insulation resistance: 50MΩ Friction: ±1mm Indicator length: 30±1mm from needle end to axis Indicator width: 0,45 ± 0,05 mm Installation Position: Vertical Backlight plate: 3,0-3,3 V 60 mA Control board: Power supply: AC/DC 12-16 V ≥5 W Input signal: ≤0,775 V Backlight output power: 1,25 V-11 V 50 mA List of packages: 1 x VU meter 1 x Control Board 6 x Flat Cable