LM393 Microphone Noise Decibel Interface 3-PINS Sound Detection Sensor Module

TeknoCrafters FA3018 LM393 Microphone Noise Decibel Interface 3-PINS Sound Detection Sensor Module The TeknoCrafters FA3018 LM393 Microphone Sound Detection Sensor is a compact, high-sensitivity digital sound sensor designed for sound level monitoring and noise detection in microcontroller-based applications. Utilizing an onboard electret microphone and LM393 comparator chip, this module provides a digital signal output when detected noise levels exceed a user-adjustable threshold. With its straightforward 3-pin interface, this sensor is ideal for integration into Arduino, Raspberry Pi, ESP32, and other microcontroller environments. Whether used in DIY automation, interactive sound installations, or as part of a noise-triggered alert system, the FA3018 offers dependable performance in a small form factor. Key Features Digital Output Signal – Outputs HIGH or LOW depending on noise level detection Integrated Sensitivity Adjustment – Onboard potentiometer allows user to calibrate the detection threshold Voltage Compatibility – Operates on 3.3V to 5V systems, suitable for a variety of controllers Simple 3-Pin Interface – Includes VCC, GND, and Digital OUT for easy connectivity Status Indicators – Power and output LEDs provide real-time visual feedback Compact and Lightweight – Designed for space-constrained projects and prototyping Technical Specifications Specification Description Operating Voltage 3.3V – 5V Output Type Digital (HIGH/LOW) Sensitivity Control Adjustable via onboard potentiometer Interface 3-pin: VCC, GND, OUT Dimensions Approx. 32mm x 17mm x 15mm Example Installation Scenario In a noise-activated alarm system, the FA3018 can be mounted inside a utility box or entrance hallway. When sound levels such as clapping, knocking, or loud voice commands exceed the preset threshold, the module outputs a HIGH signal. This can be used to trigger an alert, power a relay, or send a notification via a connected microcontroller, offering a low-cost, sound-responsive control solution. Benefits for Installers and Technicians Quick Integration – Simplified 3-pin layout makes setup fast and intuitive Calibrated Detection – Adjustable sensitivity helps tailor the module to various environments Highly Compatible – Works with common development platforms including Arduino, Raspberry Pi, and ESP32 Reliable Output – Ensures consistent behavior in sound detection applications Warranty and Support Tri-Tek Electronics is an authorized distributor of TeknoCrafters products, providing complete manufacturer warranty support, direct technical assistance, and factory-backed pricing advantages. Our retail store in Mesa, Arizona, is proud to serve the greater Phoenix area, including Chandler, Tempe, Gilbert, Scottsdale, and Glendale.