Description
Product Overview
Give your electronics ears with the KY-037 High Sensitivity Sound Sensor Module. This module features a sensitive electret microphone and an on-board LM393 comparator chip, allowing it to detect environmental sound intensity.
It offers dual output modes: Analog Output (AO) for real-time voltage reading of microphone data, and Digital Output (DO) which sends a high/low signal when sound exceeds a specific threshold. This makes it perfect for projects like clap switches, voice-activated lights, and noise monitoring systems.
Key Features
- Dual Output: Provides both Analog (voltage signal) and Digital (switching signal) outputs.
- Adjustable Sensitivity: Built-in blue potentiometer lets you fine-tune the sound detection threshold.
- Status Indicators: Includes LED indicators for power and digital switching output.
- High Sensitivity Mic: Capable of detecting claps, whistles, and ambient noise levels.
- Wide Compatibility: Works seamlessly with Arduino, Raspberry Pi, ESP8266, and other microcontrollers.
Pin Configuration
| Pin Label | Function |
|---|---|
| AO | Analog Output: Real-time microphone voltage signal. |
| G | Ground: Connect to GND. |
| + | VCC: Connect to 3.3V – 5V DC power supply. |
| DO | Digital Output: Outputs High/Low signal based on threshold. |
Technical Specifications
- Operating Voltage: 3.3V to 5V DC
- Comparator Chip: LM393
- Microphone Type: Electret Condenser
- Module Dimensions: Approx. 32mm x 17mm
- Output Format: Digital Switching (0/1) & Analog Voltage









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