MCU Adjustable Display Pattern 16 LED VU Level Meter Indicator Audio Amplifier Dual Ch 8V-12V
Size: 50 mm x 110 mm. Diameter of two fixed holes: distance 3 mm: 100 mm Input range: minimum 300 mV. Max 5V (do not take too strong a signal) Power supply: 8 V to 12 V DC Maximum current: about 70 mA Features: Two buttons S1 and S2, press and hold the button (more than 1 second) and short press (less than 1 second more than 0.2 seconds). The function keys are quite simple. S1 in normal mode, adjust the intensity of the input signal. The cycle by pressing to reduce the number of input signals, in accordance with the end automatically returns to the beginning. S1 in the brightness adjustment mode, press incredse while the high level og brightness. S2 in the normal mode, is used to select the display pattern, the same one, press the conversion cycle, automatically return to the last first. s2 in the brightness adjustment mode, click on the bottom to the level of low brightness. s2 in normal mode, long press will go into brightness adjustment mode, S2 into brightness adjustment mode, long press will be saved and return to Normal brightness display mode. To connect precautions: 1, can not use the AC power, do not take over the high voltage. 2, the signal strength is not too high, the signal strength at the headphone jack on the total sentence on it, not; t Take the power output of the amplifier signal is too strong, it can destroy the circuit. 3, audio signal 3 lines-label RLG, these are signals of the right channel, signals of the left channel, signal ground (This is a negative power board).
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