1. Made with high-quality materials for reliable performance 2. Dual 12-bit music spectrum display with ultra-compact stereo level lighting 3. Classic color scheme: 7 green + 2 orange + 3 red LEDs 4. When the microcontroller uses time-division sampling, slight amplitude differences may appear between the two light bars when the same signal is input simultaneously through two channels 5. Suitable for a wide range of applications Color: As shown Material: PCB Specifications: Operation instructions (LED indicators correspond to button press duration): In normal mode: 1. Press and hold for 1 second – switch operating mode (with preview indication) 2. Press and hold for 3 seconds – toggle between real-time mode and AGC mode (with preview indication) 3. Press and hold for 5 seconds – enter speed adjustment mode 4. Press and hold for 10 seconds – restore factory settings 5. Double-click – cycle brightness levels (low → medium → high) Speed adjustment mode (enter by holding button for 5 seconds in normal mode; exit by holding again for 5 seconds): Press button for 1 second to confirm selection 1. Main bar rise speed (7 adjustable levels) 2. Main bar fall speed (7 adjustable levels) 3. Peak hold time (7 adjustable levels) 4. Peak decay speed (7 adjustable levels) 5. In real-time mode, zoom function (7 adjustable speed levels) cycles automatically Press button to cycle through adjustable parameters Package includes: 1 × DIY Music Spectrum Level Indicator Kit Note: Color appearance may vary slightly due to lighting conditions and screen calibration. Slight measurement variation is possible.