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.