Simply connect a 4-8 Ohm speaker and amplify your sound.
It can used with FM receiver kit or WTV020SD-16P music module, door bell, RC sound system.
You can definitely use this module for other musical projects too.
DIY LM386 super audio amplifier 200X gain audio amp LM386 mono amplificador module board 5-12V.

On-board LM386 Chip
Signal Gain 200 (multiplier)
On-board speaker wiring block/holder
On-board 10K variable resistor, you can adjust the amplification volume.
Onboard volume control potentiometer clockwise to increase the volume.
On-board LED for power indicator
The chip pin leads, can be directly input audio signal
Operating voltage: 5-12V DC
Low distortion,the adjustable pot for distortion is very nice to have
Screw terminal for speaker output connection

How to Use:
It's printed right on the board. VCC in and GND for power, the other pins are for audio + and -. then the speaker screws into the green terminal.

Note:
This amplifier works fine even with weak input like a microphone input. Because of its sensitivity, care should be taken to have good shielding or the amplifier will also capture noise.
If you have a stereo application, then you will need to use two modules, however a single module is useful if you were experimenting with transistor radios.

Package included:
10 x LM386 audio amplifier module