Product Overview

This Sound Sensor Detecting Module is designed for reliable audio-triggered applications. Featuring a high-sensitivity electret microphone paired with an LM393 comparator, it converts sound intensity into a clean digital signal. The module activates with low-level output upon sound detection and includes visual indicators, making it ideal for clap switches, voice-activated alarms, and interactive projects.

Key Features

• High-Sensitivity Detection: Quick response to ambient sound with a maximum effective sensing distance of approximately 0.5 meters.
• Clean Digital Output: Provides a stable, low-level (LOW) digital signal when sound is detected, suitable for direct microcontroller input.
• Dual Status Indicators: Includes both a power LED and a signal-triggered output LED for real-time monitoring.
• Versatile Applications: Perfect for sound-activated lighting systems, security alarms, voice-controlled switches, and interactive installations (can be combined with photosensors for advanced logic).

Specifications

• Dimensions: 32mm (L) × 17mm (W) × 8mm (H)
• Core Components: Electret condenser microphone + LM393 voltage comparator
• Operating Voltage: 4–6V DC
• Output Type: Single-channel digital switch output (active LOW)
• Sensing Mode: Threshold-based; output goes LOW when sound level exceeds the set point
• Indicator LEDs: Power (red) and signal output (blue/green)
• Compatibility: Works directly with Arduino, Raspberry Pi, and other digital input devices

Connection & Usage

• VCC: Connect to 4–6V power supply
• GND: Connect to ground
• OUT: Digital output pin (goes LOW when sound is detected)
• Note: The onboard potentiometer can adjust the sound sensitivity threshold as needed.

Application Ideas

• Voice-activated LED strips or room lights
• Sound-triggered security or reminder alarms
• Interactive art installations and DIY toys
• Clap-controlled switches or smart home prototypes