Features:
* VU-01 driver board, a newly redesigned, high-quality audio driver. Includes two VU meters and driver board.
* 39-inch 500V level meter. Weight: 0.085 kg per set (two meters plus driver board).
* Driver board mounting dimensions: 67.4 mm x 56 mm frame, 57 mm x 50.5 mm screw holes. Suitable for M3 screws.
* Two blue 3296 series 500 ohm potentiometers on the board adjust the sensitivity of each meter. Turning clockwise increases sensitivity.

Specifications:
Part Name: VU Level Meter + Driver Board
Material: ABS, PCB
Color: As shown
VU Meter Specifications: (See below)
500μA VU meter with filament backlight
Interface DC resistance: 630 ohms
Backlight filament voltage: DC/AC 6V to 12V
VU Meter Driver Specifications: (see below)
Power Supply Voltage: AC 12V 500mA
Size: 67mm x 56mm x 25mm
Connects two VU meters (100μA to 500μA). You do not need to adjust our 500μA VU meters. (Other models may require adjustment.)
Tuning Instructions: (see below)
1) Adjust the resistance values of R9 and R10 according to the backlight's electrical specifications to achieve the desired brightness.
2) Adjust VR1 and VR2 to adjust the pointer swing amplitude for the left and right channels separately. Please adjust according to the power.
3) Please select AC 12V/500mA power input.
4) During operation, R9 and R10 will generate a certain amount of temperature.

Package Contents:
2 x VU Level Meters
1 x Driver Board