1. FLEXIBLE AND ADJUSTABLE: LM386 power amplifier chip, the magnification can be adjusted between 20 and 200 times through the adjustable on the board, can directly drive a small power horn, suitable for electret microphone use
2. EASY TO USE: Electret microphone amplifier module supports GND ground, VCC connected to 2.4‑5VDC; For good performance, use the quietest power supply available (this will be a 3.3V power supply)
3. POWER SUPPLY NOISE SUPPRESSION FUNCTION: The amplifier has good power supply noise suppression, support working voltage DC 4V-12V
4. Scratch- ABS: The microphone amplifier module adopts excellent ABS material, possesses impact, scratches,
5. 5PCS IN TOTAL: The package contains a total of 5pcs amplifier module, enough to replace and use, very convenient

Specification:
Item Type: Electret Microphone Amplifier Module
Model: LM386
Material: ABS
Operating voltage: DC 4V-12V.

packing list:
5 x electret microphone amplifier module

Notice:
Pay attention to standard operation.