About this item

🎤 LM393 Sound Detection Sensor Module – 3-Pin (Black PCB)

The LM393 sound sensor module is a simple device used to detect sound or noise (claps, voice, acoustic vibrations).
Using an LM393 comparator, it provides a digital output, making it ideal for Arduino, ESP32, and automation projects.

🛡️ Features & Advantages

• 🎤 Sound detection (clap, voice, noise)
• 🔘 Digital output (DO)
• 🎚️ Adjustable sensitivity via potentiometer
• ⚡ 3.3V and 5V compatible
• 💡 Detection indicator LED
• 🧰 Compact 3-pin design

📦 Technical Description

• 🧩 IC: LM393
• 🎤 Type: sound sensor (microphone + comparator)
• 🔌 Supply voltage: 3.3 – 5 V DC
• 🔘 Output: digital (HIGH/LOW)
• 🎚️ Adjustment: sensitivity potentiometer
• 🔌 Pins: VCC, GND, DO
• 📏 Dimensions: approx. 32 × 15 mm

🛠️ Applications

• 🤖 Arduino / ESP32 projects
• 🔔 Sound-triggered systems (alarms, clap switch)
• 🏠 Home automation
• 🧪 Electronics prototyping
• 🎮 Interactive projects

⚠️ Usage Notes

• ❗ Does not measure exact sound level (no analog output)
• 🔧 Adjust sensitivity to avoid false triggers
• 🛡️ Avoid electromagnetic interference

✨ Key Features

• 🎤 Simple sound detection
• 🔘 Digital output
• 🎚️ Adjustable sensitivity
• ⚡ 3.3V / 5V compatible
• 📦 Ideal for automation