1. Made with high-quality materials for reliable performance 2. Dual 12-bit music spectrum display with ultra-compact stereo volume level lighting 3. Classic color combination: 7 green, 2 orange, and 3 red LEDs 4. When the microcontroller uses time-division sampling, slight amplitude differences may occur between the two light bars when the same signal is input in parallel through two channels 5. Suitable for a wide range of applications Color: As shown Material: PCB Parameters: Operation instructions: In normal mode: 1. Press and hold the button for 1 second to switch modes (with corresponding preview) 2. Press and hold the button for 3 seconds to switch between real-time mode and AGC mode (with corresponding preview) 3. Press and hold the button for 5 seconds to enter speed setting mode 4. Press and hold the button for 10 seconds to restore factory settings 5. Double-click the button to adjust the brightness of the level light, cycling from low to medium to high brightness Speed setting mode: (Enter by pressing and holding the button for 5 seconds in normal mode; exit by pressing and holding for 5 seconds) Press the button for 1 second to confirm selection 1. Main body rising speed (7 speed levels available) 2. Main body descending speed (7 speed levels available) 3. Dwell time (7 time levels available) 4. Descent speed (7 speed levels available) 5. In real-time mode, zoom in or zoom out function (7 speed levels available) cycles through settings Press the button to cycle through adjustable parameters Package Contents: 1 set x DIY Music Spectrum Level Indicator Lights Note: Light reflection and differences in display screens may cause slight variations in the color shown in the image compared to the actual product. Measurement error allowed within +/- 1-3 cm.