Product overview:
This module is a level indicator module, using the KA2284 chip, the chip contains an AC detector amplifier, suitable for AC/DC level indicator, AC or DC can be selected through the jumper cap on the board. It can be used as DC level voltage level indication and AC signal amplitude indication. The greater the voltage or amplitude of the input signal, the more LED lights are on. Usually, audio signals can be input, which can be beat with the melody of the music signal.

Product parameters:
Supply voltage: 3.5-12V
The level amplitude can be adjusted: through the potentiometer
PCB board size: 29x21mm/1.41x0.82in

Product function:
IN: Positive signal input terminal
GND: negative pole of input
GND: negative power supply
VCC: positive power supply

Package includes:
5 x KA2284 Power Level Indicator Module
1 x 10Pin Female To Male Dupont Cable