ALLNET 4duino Sound Sensor Module (KS-AudioSensor)

The ALLNET 4duino Sound Sensor Module (KS-AudioSensor) is a compact and versatile sound detection module designed for use with Arduino, ESP32, Raspberry Pi, and other microcontroller platforms. It features an electret condenser microphone and an LM393 comparator to detect sound intensity, providing both analog and digital output signals. This module is ideal for voice control, sound-activated projects, security alarms, and smart home applications.

Advantages

Easy to integrate with popular microcontrollers, adjustable sensitivity via onboard potentiometer, and dual output modes (analog and digital) for flexible interfacing. The module includes indicator LEDs for power and digital output status, making it simple to monitor operation.

Suitable for

• Voice control systems
• Sound-activated switches
• Security alarm systems
• Smart home automation projects
• Educational electronics projects

Key specifications

• Sensor Type: Electret Condenser Microphone
• Operating Voltage: 3.3V - 5V DC
• Output Type: Analog (AO) and Digital (DO)
• Comparator Chip: LM393
• Sensitivity Adjustment: Yes, via onboard potentiometer
• Indicator LEDs: Power LED, Digital Output LED
• Interface Pins: 4-pin header (VCC, GND, AO, DO)
• Digital Output Signal: TTL level
• Analog Output Signal: Real-time voltage signal
• Detection Principle: Sound intensity threshold detection
• Compatibility: Arduino, ESP32, Raspberry Pi, Microcontrollers
• PCB Material: FR-4
• Mounting Holes: Yes (2)

Recommendations

For best results, use with a microcontroller that supports analog input (e.g., Arduino Uno, ESP32). Adjust the potentiometer to set the desired sound threshold. Suitable for indoor use only.