Precision Sound Detection for Your Electronic Projects

Whether you are building a smart home security system or an interactive STEM project, accurate environmental sensing is critical. This Sound Sensor Module is engineered to detect audio intensity in its surroundings, translating sound waves into readable electrical signals for your microcontroller. Utilizing a highly responsive electret condenser microphone, it easily picks up ambient noises, from human speech to handclaps, making it an essential component for any interactive electronic build.

Dual Output Versatility (AO & DO)

Unlike basic sensors that only offer a binary on/off state, this module features dual signal outputs to suit diverse engineering needs. The Analog Output (AO) provides a real-time, continuous voltage signal that directly mirrors the microphone's audio waveform, ideal for granular noise level monitoring. Simultaneously, the Digital Output (DO) delivers a clear High/Low logic level when the sound exceeds a specific limit, perfect for triggering immediate actions like turning on a relay or lighting an LED.

Adjustable Sensitivity for Custom Thresholds

Avoid false alarms caused by background noise. The onboard precision potentiometer allows you to manually calibrate the digital output's threshold. By simply turning the screw, you can fine-tune the exact decibel level required to flip the DO pin, giving you complete control over your project's responsiveness.

Seamless Microcontroller Integration

Designed for broad compatibility, this module operates efficiently on a wide voltage range of 3V to 5.5V DC. This makes it a seamless plug-and-play addition for both 3.3V systems (like Raspberry Pi or ESP32) and standard 5V logic boards (like Arduino Uno). Combined with a standard 3mm mounting hole, integration into custom 3D-printed enclosures or standard chassis is fast and secure.