KY-038 Sound Detection Sensor Module

KY-038 Acoustic Sound Detection Sensor Module

The KY-038 sound sensor features a high-sensitivity electret condenser microphone coupled to an LM393 comparator circuit. It provides both an analog audio waveform output and a digital output that triggers high when sound volume exceeds the potentiometer threshold.

Specifications

• Microphone Type: Electret condenser microphone
• Dual Outputs: AO (Analog Output) and DO (Digital Threshold Output)
• Sensitivity Adjustment: Multi-turn precision trimmer
• Operating Voltage: 3.3V to 5.0V DC
• Frequency Response: 50 Hz to 20,000 Hz
• Applications: Clap-controlled switches, noise monitors, voice alarms