ALLNET 4duino Microphone B03 Sound Detection Sensor Module

The ALLNET 4duino Microphone B03 is a compact sound detection sensor module designed for use with Arduino, Raspberry Pi, ESP32, ESP8266, and other microcontrollers. It features an electret condenser microphone and an LM393 comparator, providing both analog and digital output for sound intensity detection. Ideal for voice control, security systems, and interactive projects.

Advantages

Easy to integrate with popular microcontroller platforms; adjustable sensitivity via onboard potentiometer; dual output modes (analog and digital) for flexible signal processing; built-in LED indicators for power and digital output status.

Suitable for

• Sound detection and voice control projects
• Security systems and alarm triggers
• Interactive installations and robotics
• Educational electronics and prototyping

Key specifications

• Module Type: Sound Detection Sensor Module
• Sensor Type: Electret Condenser Microphone
• Comparator Chip: LM393
• Operating Voltage: 3.3V - 5V DC
• Output Type: Analog Output (AOUT), Digital Output (DOUT)
• Adjustable Sensitivity: Yes, via onboard potentiometer
• Digital Output Threshold: Adjustable
• LED Indicators: Power LED, Digital Output Status LED
• Pin Configuration: 4-pin header (VCC, GND, AOUT, DOUT)
• Detection Range: Sound intensity detection
• Compatibility: Arduino, Raspberry Pi, ESP32, ESP8266, other microcontrollers
• Application: Sound detection, voice control, security systems, interactive projects
• Mounting Holes: Yes (2)
• Operating Temperature: -20°C to 70°C

Recommendations

For best results, use with a microcontroller that supports analog input. Adjust the sensitivity potentiometer to set the desired threshold for digital output. Suitable for indoor use only.