Welcome to the store! Feature-rich, the user can freely adjust each light bar and the main body of the light's actual speed, with the most suitable for their own display. Audio input via TI signal isolation, maximum to avoid the single chip's high-frequency interference to an audio circuit in series. Various colors of lights alone provided a current-limiting resistor. a perfect match. Style: Finished Kit Color: Black+white Material: PCB Package Contents: 1 * Dual 12-bit LED Level Display Board 1 * cable Note: 1. MCU used time-sharing sampling when sampling, so that there are dual-channel simultaneous parallel input signal changes quickly, the amplitude of the two light bar displays may have differences, this is a normal situation. 2. In extreme cases, there may be very faint high-frequency noise. It is recommended to replace the signal input cable with a double-core shielded cable in position. 3. Operating voltage: 7-12V, current can work in more than 100MA. Forbidden voltage exceeds 12V or positive and negative reverse, otherwise it will cause damage to the level indicator. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!