Feature: 1. Easy Wiring: The kit includes 2 VU meters and 1 driver board, which is easy for wiring, connection and operation even for beginners. 2. Backlit Function: The VU panel meter has a backlit function, which can be read clearly even in a dim environment. 3. Adjustment Potentiometers: The driver board can control two VUs, potentiometers can adjust the brightness of the backlit, adjust the amplitude of the pointer swing, which is a good helper for the recording engineer. 4. Stable Performance: The VU meter adopts high strength ABS, and the drive board adopts precise wired PCB board, with stable performance and good durability. 5. Wide Application: This VU meter is suitable for DIY, recording studio, home audio, car audio conversion, medicine equipment etc. Specification: Item Type: VU Meter Material: ABS, PCB Maximum Current Sensitivity: 1000uA±10% Internal DC Impedance: 650Ω±10% Insulation Resistance: More than 50MΩ Friction: ±1mm Pointer Length: 44±1mm from needle end to axes Pointer Width: 0.45±0.05mm Meter Installation Position: Vertical Backlit: Light transmission 3V 20MA Scope of Application: Suitable for DIY, recording studio, medicine equipment, etc. Weight: Approx.206g/7.3oz. Package List: 2 x VU Meter1 x Driver Board6 x Wiring Cable1 x Audio Cable1 x User Manual