Description Features: brand new and high quality Lamp bead :5mm round fog LED, the light is uniform and not dazzling. Power supply: between 5V and 12V for DC, the board is equipped with microUSB socket, which can be plugged into the power supply with the corresponding mobile phone charging cable, and two pads are reserved for users to lead their own. The signal sensitivity is adjustable, the onboard adjustable potentiometer can be adjusted about 10 laps, and the internal sound of the potentiometer can be heard after the adjustment. The inverse clock is reduced and the clockwise clock is improved. It can be used by DIY. It is recommended that it be used by people with hands-on ability and electronic basis. It can for most common audio device such as mobile phone, computer, C-D players, preamp, power amplifier or studio mixers and so on, suitable for a variety of scenarios. Made of high quality materials, it has good durability and stability, and can be used for a long for time. The feature-rich, user can freely adjust each light bar and the main for peak of the real speed of light, with the most suitable for their own display. Specifications: Material: ABS Size: 100x30.1mm/ 3.93x1.18 in Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Audio Level Indicator