Feature:1. INCLUDED PARTS: Including 2 VU meters and a driver board, and equipped with flat cables and audio cable, easy to connect and drive, convenient and durable.2. EASY TO ADJUST: A driver board can control 2 VU meter heads, with 3 potentiometers, and can adjust the backlight brightness and pointer swing amplitude.3. WITH BACKLIGHT: The audio level meter with backlight design, easy to operate, and can read clearly even in dim environment, which is reliable and practical.4. WIDE APPLICATION: This VU meter and driver board kit is suitable for DIY preamplifier, home recording equipment or car audio conversion equipment, etc.5. RELIABLE MATERIAL: These accessories are made of excellent ABS and PCB materials, which are impact and wear resistant, and have stable performance.Specification:Item Type: Audio Level MeterProduct Material: ABS, PCBMaximum Current Sensitivity: 500uA10 percent Internal DC Impedance: 65010 percent Insulation Resistance: More than 50MFriction: 1mmPointer Length: Approx. 37 1mm or 1.5 0.04in, from needle end to axesPointer Width: 0.45 0.05mmMeter Installation Position: VerticalBacklight: Yellow background, orange light bulb 12V 55mAScope of Application: Suitable for DIY, recording studio, medical equipment, etc.Weight: Approx. 184g or 6.5oz.Package List:2 x VU Meters1 x Driver Board6 x Cables1 x Audio Cable1 x User Manual