Feature: 1. Made of high quality materials, it has good durability and stability, and can be used for a long time. 2. With 8 display effects, users can freely adjust the real speed of each optical column and the main optical column. 3. The original real-time mode can be adjusted to professional DB mode, which can be installed in professional related equipment for signal monitoring. 4. Signal input is isolated by op-amp to avoid high-frequency interference of single-chip computer into audio. 5. It can be used by DIY. It is recommended that it be used by people with hands-on ability and electronic basis. Specification: Condition: 100% Brand New Item Type: Music Spectrum Indicator Material: Semiconductor PCB Size: Approx. 80x14mm / 3.1x0.6in LED Module Size: Approx. 58x14mm / 2.3x0.6in Line Length: Approx. 20cm / 7.9in Display Effect (a total of 8 effects) 1. The main light bar + peak stay after the drop 2. The main light bar disappears after the peak stays 3. The main light (no peak) 4. The main light bar + peak flow to the right disappears 5. Main light section (2 lights) 6. The main light bar is highlighted (1 light) 7. The main light bar + peak running back and forth 8. The main light bar + peak light jumps to the right after two lamp positions Wide range of AGC modes and professional DB mode Package List: 1 x Music Spectrum Indicator2 x LED Module1 x 2.0 Spacing 5PIN Socket1 x 2.0 Spacing 20cm 5PIN Line