Microphone Sound Detection Sensor Module 4 PIN
The Microphone Sound Detection Sensor Module (4-PIN) is an essential component for audio-responsive electronics projects. This compact module detects ambient sound through a built-in electret microphone and converts the detected audio signals into both analog and digital outputs. It’s ideal for applications involving voice activation, sound-triggered automation, and DIY electronics projects using microcontrollers like Arduino, Raspberry Pi, or ESP32.
Equipped with a sensitivity adjustment potentiometer, the module allows precise tuning to detect different sound intensity levels. The analog output (AO) provides a continuous signal that represents the detected sound level, while the digital output (DO) changes state when the sound exceeds a certain threshold. This makes it perfect for triggering actions based on clapping, tapping, or other noises.
Operating on both 3.3V and 5V, the sensor is compatible with most development platforms. Onboard LED indicators provide real-time feedback, lighting up when sound is detected, making it easy to calibrate during prototyping.
Its small footprint ensures easy integration into compact electronic designs, making it an ideal choice for students, makers, and developers building interactive, sound-activated systems.
Key Features
High sensitivity sound detection
Analog and digital output support
Adjustable sound sensitivity via onboard potentiometer
Wide voltage compatibility: 3.3V – 5V
Built-in LED indicators for power and signal detection
Quick response to sound events
Compact and lightweight design
Product Specifications
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V – 5V |
| Output Type | Analog (AO), Digital (DO) |
| Microphone Type | Electret condenser mic |
| Sensitivity Adjustment | Yes (Potentiometer included) |
| Pins | 4 (AO, GND, DO, VCC) – |
| Dimensions | Approx. 32mm x 17mm x 8mm |
| LED Indicators | Power LED, Signal LED |
| Operating Temperature | -10°C to +60°C |
Pin Configuration
| Pin | Label | Function |
|---|---|---|
| 1 | AO | Analog output of the microphone |
| 2 | GND | Ground |
| 3 | DO | Digital output (high when sound is detected) |
| 4 | VCC | Voltage supply (3.3V – 5V) |
Applications
Sound-activated lighting systems
Audio-responsive robots
Voice-controlled devices
Security and intrusion alarms
Smart home automation
Student and maker electronic projects
