This audio amplifier module is based on LM386 chip. It has a gain value up to 20. The module includes speaker terminal blocks, a power led indicator and 10K adjustable resistance, so you can adjust the volume of amplification.
Working voltage: 5V ~ 12V
Size : 41 (mm) x13 (mm)
VCC: Voltage supply (5V~12V)
IN: Audio signal
1 x LM386 Audio Amplifier Module