OVERVIEW
The sensor has 3 main components on its circuit board.
First, the sensor unit at the front of the module which measures the area physically and sends an analog signal to the second unit, the amplifier.

The amplifier amplifies the signal, according to the resistant value of the potentiometer, and sends the signal to the analog output of the module.

The third component is a comparator which switches the digital out and the LED if the signal falls under a specific value.

You can control the sensitivity by adjusting the potentiometer.

Please notice: The signal will be inverted; that means that if you measure a high value, it is shown as a low voltage value at the analog output.

FEATURES
1. For sound detection module has two outputs:AO,DO.
2. High sensitive microphone and high sensitivity.
3. With power indicator light.
4. There is a mounting screw hole 3mm
5. With analog output.

SPECIFICATIONS:
Color:red
Operating voltage: 5 V
Size: 35 x 15 x 14mm
Weight:3g

Digital Output:
int Led=13;//define LED interface
int buttonpin=3 //Define D0 Sensor Interface
int val;//define numeric variables val
void setup()
{pinMode(Led,OUTPUT);// Define LED as output interface
pinMode(buttonpin,INPUT);//Define D0 Sensor as output Interface}

(void loop)
{val=digitalRead(buttonpin);//digital interface will be assigned a value of 3 to read val
if(val==HIGH)//When the light sensor detects a signal is interrupted, LED flashes
{digitalWrite(Led,HIGH)}else
{digitalWrite(Led,LOW)}

Analog Output:
int sensorPin = A5; // select the input pin for the potentiometer
int ledPin = 13; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor

(void setup)
{pinMode(ledPin, OUTPUT);
Serial.begin(9600);}

(void loop)
{sensorValue = analogRead(sensorPin);
digitalWrite(ledPin, HIGH);
delay(sensorValue);
digitalWrite(ledPin, LOW);
delay(sensorValue);
Serial.println(sensorValue, DEC);}

Packing List

x1 unit sound sensor module KY-037