Item Type: VU Meter Material: ABS, PMMA Weight: Approx. 103g/3.63oz Color: As Shown Panel Size: Approx. 7.5x8cm/2.95x3.15in Backlight Voltage: 2.8V to 3.8V, 20ma Internal Resistance: 0.775V, 3.9K Pointer Material: Zinc White Copper Pointer Color: Black Direction of Pointer Swing: Left to Right Pointer Length: Approx. 361mm, from Needle End to Axis Pointer Width: Approx. 0.450.05mm Usage Direction of VU Meter: Vertical Suitable: For DIY, Recording Studio, Home Acoustics, Car Acoustics, Etc 1Pointer Type: VU meter adopts a pointer type dial, the measurement result is accurate, and the measurement result can be displayed directly. 2Easy to Install: The VU meter is a basic tool in acoustic equipment, easy to install, excellent performance and long service life. 3Wide Application: The ABS VU level meter is suitable for DIY, recording studio, family, vehicle devices replacement, meeting your different needs. 4Premium Material: Made of premium ABS, PMMA, the VU meter is anti static, anti vibration, sturdy and durable, with a long service life. 5High Accuracy: The pointer type design makes the DB level meter highly accurate, and the meter can directly show measurement results for users.1 x VU Meter1. If your backlight type is bulb, you need to connect to the output port of 10V voltage to light the backlight. 2. The type of drive header must be the DC drive header. 3. Pay attention to the backlight power supply voltage of the meter head, and then receive the corresponding backlight output port. Generally, The LED is connected to 5V, and the bulb type is connected to 10V. 4. If there is noise, it is recommended to power the drive board separately. Do not share the power with the power amplifier to avoid common ground noise.