Sound Sensor Module 4 pin

The Sound Sensor Module (Pin 4 Digital Output) is a compact, high-sensitivity sensor designed to detect sound levels in the environment. Equipped with a built-in microphone and digital comparator circuit, this module outputs a digital HIGH/LOW signal on Pin 4 when the ambient sound exceeds the user-defined threshold.

This module is perfect for sound-activated systems, noise alarms, voice control triggers, and smart automation projects. You can adjust its sensitivity using the onboard potentiometer, making it suitable for quiet or noisy surroundings.

It’s compatible with a wide range of microcontrollers, including Arduino, ESP32, ESP8266, Raspberry Pi, and more, making it ideal for beginner and advanced DIY electronics enthusiasts.

Key Features:

• ✅ Digital Output on Pin 4
  Triggers a digital HIGH/LOW signal when sound crosses the adjustable threshold level.

• ✅ Adjustable Sensitivity
  Fine-tune the trigger level for sound detection using the onboard potentiometer.

• ✅ Built-in Electret Microphone
  Captures sound from the surrounding environment with reliable accuracy.

• ✅ LED Indicator
  Onboard LED lights up when the sound threshold is reached—ideal for visual debugging.

• ✅ Easy Integration
  Standard 3-pin output: VCC, GND, and Digital OUT (connected to Pin 4 in your project).

• ✅ Compact & Lightweight
  Small form factor makes it suitable for embedding into smart devices, robotics, and automation systems.

Specifications:

• Operating Voltage: 3.3V – 5V DC

• Output Type: Digital (connected to Pin 4)

• Sensitivity: Adjustable via potentiometer

• Microphone Type: Electret condenser

• Interface: 3-pin (VCC, GND, OUT)

• Dimensions: ~3.2 cm x 1.4 cm

• Current Draw: <10mA

• LED Indicator: Yes (signal LED)