The KY-037 Microphone sound detection module detects loud sounds like slamming doors. The module has an analog and digital output so the sensor can be ready by any microcontroller.

Specifications:

• Power supply voltage: +5V
• Power On LED light: LED1
• Electret Condenser Microphone (ECM) sensor
• AO = analog output provides a real-time output voltage signal of the microphone
• DO = Digital output, output goes high when the intensity of the sound reaches threshold
• Comparator Circuit: LM393
• Comparator Output LED: LED2, on when sound reaches threshold
• Built in potentiometer can be used to adjust the DO threshold level
• Mounting screw hole size: 3mm
• Circuit Board Dimensions: 35mm x 15mm x 14mm (L x W x H, excluding connector and microphone)