brand new and high quality Features:The feature-rich, user can freely adjust each light bar and the main for peak of the real speed of light, with the most suitable for their own display.Audio input through the TI original signal isolation, the maximum to avoid the single-chip high-frequency interference to an audio circuit in series.Different colors of light alone provided a current limiting resistor. Guarantee a perfect match.Important note:1. MCU in the sampling time-sampling, so that there is dual-channel simultaneous parallel input signal changes fast, the amplitude of the two light bar display may vary, this is a normal situation.2. In extreme cases, there may be very slight high frequency noise. Recommended to replace the signal input line for head position as dual-core shielded cable.3. Operating voltage: 7-12v current can work in more than 100MA. Prohibited or voltage exceeds 12v positive and negative reversed, whether the person will cause light damage level.Display effect:1. strip show + after for peak travel whereabouts2. strip show after + the disappearance of the for peak travel3. The strip display + (no for peak display)4. The strip display + (One lights)5. The strip display + (Two lights) Setting mode:1. Brightness adjustment mode: There are three brightness adjustments, short press to set2. Speed adjustment mode: There are 6-speed adjustment mode, short press to enter adjustment (not recommended to change the default value) Specification:Operating voltage: 7-12V 100MADimensions: 1.4x7.9cm/0.55x3.11inchColor: As shownQuantity: 1 SetNote: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 Set Mini Dual 12-bit Music Level Indicator