1. Minimum volume, PCB size: 80 x 14 mm; LED module area: 58 x 14 mm 2. Feature-rich design allows users to freely adjust each light bar and the main peak response for optimal visual display 3. Audio input incorporates TI signal isolation to minimize high-frequency interference from the microcontroller into the audio circuit 4. Individual current-limiting resistors are provided for each color LED to ensure proper current matching Important notes: 1. The MCU uses time-sampling, so fast simultaneous changes in dual-channel input signals may cause slight amplitude differences between the two light bars — this is normal 2. In rare cases, very slight high-frequency noise may occur. Use a dual-core shielded cable for the signal input line to mitigate this 3. Operating voltage: 7–12 V DC; operating current: >100 mA. Do not exceed 12 V or reverse polarity — doing so may damage the unit Display modes: 1. Bar graph + peak hold 2. Bar graph + peak decay 3. Bar graph only (no peak) 4. Bar graph + peak decay with right-shift effect 5. Bar graph + three-light highlight 6. Scrolling marquee + peak effect 7. Peak + two-digit jumping light effect Operating Voltage: 7–12 V DC, 100 mA LED Colors: 7 green + 2 orange + 3 red Display Modes: Standard mode and Automatic Gain Control (AGC) mode Color: Black Material: Plastic Package Contents: 1 × Level indicator 1 × Signal cable (random color; no color selection available) Note: Lighting conditions and screen settings may cause slight color variation between product images and the actual item.