Sound Sensor Module Specifications

General

• Sensor Type: Microphone-based sound detection
• Output Type: Analog and Digital
• Module Purpose: Detects sound, converts it to a voltage signal, and outputs either an analog voltage or a digital HIGH/LOW signal

Electrical

• Operating Voltage: 3.3V – 5V DC
• Digital Output: TTL-compatible HIGH/LOW signal
• Analog Output: Varies with sound intensity (0–VCC)
• Current Consumption: ~3–5 mA (depends on module and load)

Adjustable Features

• Sensitivity Control: Onboard potentiometer to adjust threshold for digital output
• LED Indicator: Lights up when sound exceeds the threshold

Performance

• Detection Range: 20 cm – 1 m (depends on microphone and gain)
• Response Time: Fast enough for basic sound detection, typically <1 ms

Physical

• Module Dimensions: Approx. 32 mm × 14 mm × 10 mm (varies by manufacturer)
• Mounting: 2–4 holes or pin headers for easy connection

Interface / Pins

• VCC – Power supply (+3.3V to +5V)
• GND – Ground
• DO – Digital output (HIGH when sound detected above threshold)
• AO – Analog output (voltage proportional to sound intensity)

Applications

• Sound-activated lights or devices
• Clap switch projects
• Simple audio level monitoring
• Arduino / microcontroller learning projects