Features: 1Easy Wiring: The kit includes 2 VU meters and 1 driver board which is easy for wiring connection and operation even for beginners. 2Backlit Function: The VU panel meter has a backlit function which can be read clearly even in a dim environment. 3Adjustment 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. 4Stable Performance: The VU meter adopts high strength ABS and the drive board adopts precise wired PCB board with stable performance and good durability. 5Wide Application: This VU meter is suitable for DIY recording studio home audio car audio conversion medicine equipment etc. Specification: Item Type:VUMeterMaterial: ABS PCBMaximum Current Sensitivity: 1000uA10%Internal DC Impedance: 65010%Insulation Resistance: More than 50MFriction: 1mmPointer Length: 441mm from needle end to axesPointer Width: 0.450.05mmMeter Installation Position: VerticalBacklit: Light transmission 3V 20MAScope 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 xAudioCable1 x User Manual