Yellow Tommy LM393 Sound Detection Sensor Module for Arduino | Pack of 2 | DIY Projects | Electronic Components Electronic Hobby Kit

This Sound Detection Sensor Module is designed for detecting audio signals in the environment and converting them into digital and analog outputs. The module features a built-in microphone and amplifier circuit with adjustable gain, allowing it to accurately detect sound levels across a wide sensitivity range (48–52 dB at 1kHz). It includes both AO (Analog Output) and DO (Digital Output) pins for versatile use in automation, noise-activated systems, and robotics. The onboard filter-rectifier circuit ensures clean and stable signal transmission. The analog output voltage corresponds proportionally to the sound intensity and centers around Vcc/2, making it ideal for analog-to-digital conversion applications. Meanwhile, the digital output triggers a LOW signal when a preset threshold is exceeded—perfect for interrupt-based event detection.