Feature: 1. Audio Level Meter: This sound level indicator set includes 2pcs VU meter and 1pc driver board, which enables easy testing. 2. Reliable Working: Ensuring small distortion in the recording, also has 960uA maximum current sensitivity for high accuracy. 3. Smart Adjustment: Both the backlight brightness and pointer swing amplitude are adjustable, making the viewing much clearer. 4. Wide Application: Allows for wide application on DIY, home audio, car audio conversion and so on, very useful and reliable. 5. Easy to Install: Comes with a light weight and a compact size, the convenient wiring will save your time in installation. Specification: Item Type: VU Meter Product Material: ABS, PCB Maximum Current Sensitivity: 960uA ± 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 Backlight Board: Light transmission with backlight, 3V 20mA. Scope of Application: Suitable for DIY, recording studio, equipment, etc. Wight: Approx.206g/7.27oz. Package List: 2 x VU Meter1 x Driver Board6 x Flexible Flat Cable1 x Audio Cable1 x User Manual