This is a 4-pin microphone voice sound sensor module based around the LM393 chip. It features an electric condenser microphone, single channel signal output with a low level output signal used for sound control light.

• Working Voltage DC: 4-6V
• Comparator Circuit: LM393
• Power on LED Light: LED1
• Power Supply Voltage: 3-24V
• Hole Inner Diameter: Approx. 3mm
• Board Weight: 5g

• Datasheet