Green MCU Meter Level Indicator Module VU Meter Board 16 LED Dual Channel A3GU
6,34 €
S1 in normal display mode,Adjust the intensity of the input signal. Signal input range: minimum 300 mv. Max 5 v (don't take too strong signal). Two buttons S1 and S2,Long press (more than 1 second)and Short press (less than 1 second greater than 0.2 seconds).
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