1. Use high-quality materials with guaranteed quality 2. Dual 12 bit music screen spectrum level ultra small volume stereo level light 3. Classic color combination: 7 green+2 orange+3 red 4. When the microcontroller uses time-division sampling, there may be differences in the amplitude displayed by the two light bars when the same signal is input in parallel through two channels 5. Wide range of applications Colour:As Shown Material:PCB Parameters: Specific operation: (When pressing the button, there be a corresponding LED indicating the button time) In normal mode: 1. Press the button for 1 second - mode switch (there be corresponding preview) 2. Press the button for 3 seconds - switch between real-time mode and AGC mode (there be corresponding previews) 3. Press the button for 5 seconds - enter speed setting mode 4. Press the button for 10 seconds - restore factory settings 5. Double click the button - adjust the brightness of the level light, cycle from low light to medium light and then to high light Speed setting mode: (Press and hold the key for 5 seconds to enter in normal mode, press and hold the key for 5 seconds to exit) Press button for 1 second - on 1. Main body rising speed (7 levels of speed are optional) 2. Main body descent speed (7-level speed optional) 3. dwell time (Level 7 time optional) 4. descent speed (7-level speed optional) 5. In real-time mode, the zoom in or zoom out function (with 7 levels of speed optional) is cyclically switched Press the button to cycle through the set parameters Package Contents: 1 set * DIY Music Spectrum Level Indicator Lights Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.