Sound Sensor Detection Module for Arduino AVR PIC – LM393
Sound Sensor Detection Module for Arduino AVR PIC – LM393
High Sensitivity Sound Microphone Sensor Detection Module
Take your Arduino, AVR, or PIC projects to the next level with this compact, high-sensitivity sound detection sensor module. Featuring the reliable LM393 comparator chip and an electret condenser microphone, this module accurately detects sound signals and outputs a clean digital switch signal — perfect for hobbyists, students, and engineers alike.
Whether you're building an acoustic-controlled lighting system, a sound-triggered alarm, or an intelligent vehicle, this sensor module delivers consistent and responsive performance in a tiny footprint.
Key Features
- Main Chip: LM393 with electret condenser microphone
- Working Voltage: DC 4–6V
- Dimensions: 32mm × 17mm × 8mm (L × W × H)
- Single-channel digital signal output — outputs LOW level when sound is detected
- Signal output indicator LED lights up on detection
- Maximum detection distance: 0.5 meters
- Compatible with Arduino, AVR, PIC, and most microcontroller platforms
- Ideal for acoustic control lights, sound-triggered alarms (paired with photosensitive sensors), and sound detection applications
- Compact and breadboard-friendly design
- 100% brand new condition
Technical Specifications
| Main Chip | LM393, Electret Condenser Microphone |
| Working Voltage | DC 4–6V |
| Output Type | Single Channel Digital Switch (Active LOW) |
| Max Detection Distance | 0.5 Meters |
| Board Dimensions | 32mm × 17mm × 8mm |
| Condition | Brand New |
| Country of Origin | Made in Mainland China |
Common Applications
- Acoustic-controlled lighting systems
- Sound-triggered alert or alarm systems
- Intelligent robotic vehicles and automation
- Combined sound + light sensor detection projects
- Arduino, AVR, and PIC microcontroller prototyping
Package Contents
- 1 × Sound Detection Sensor Module
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What microcontroller platforms is this sound sensor module compatible with?
A: This sound detection sensor module is compatible with a wide range of microcontroller platforms, including Arduino (Uno, Nano, Mega), AVR-based boards, PIC microcontrollers, Raspberry Pi (with appropriate logic level handling), and most other 3.3V–5V development boards. It outputs a standard digital LOW signal when sound is detected, making integration straightforward.
Q: How sensitive is this sound sensor module and what is its detection range?
A: The module uses a high-sensitivity electret condenser microphone paired with the LM393 comparator chip, allowing it to detect sound events within a maximum distance of approximately 0.5 meters (about 20 inches). Sensitivity can typically be adjusted via the onboard trimmer potentiometer to suit your specific environment and project requirements.
Q: What output does the module provide when it detects a sound?
A: When sound is detected, the module outputs a LOW (active low) digital signal on its output pin and simultaneously illuminates the onboard signal indicator LED. This makes it easy to monitor detection status both programmatically (via your microcontroller) and visually during prototyping and testing.
Q: What is the operating voltage for this sensor module?
A: The sound detection sensor module operates on a DC supply voltage of 4V to 6V, making it fully compatible with standard 5V Arduino and AVR systems right out of the box. Always ensure your power supply falls within this range for reliable operation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.