Sound sensor DFR0034 V2.2

int led = 13;
int threshold = 100; //Change This
int sensor = A0;
int valeur ;

void setup() {                
  Serial.begin(9600); // For debugging
  pinMode(led, OUTPUT);
  //pinMode (sensor, INPUT);   
}

void loop() {
  
  valeur = analogRead(sensor); // Reads the value from the Analog PIN A0
  Serial.print("Sound Level: ");
  Serial.println(valeur);//print the value
  
  
  if(valeur>=threshold)
  {
    digitalWrite(led, HIGH); //Turn ON Led
    delay(200);
  }  
  else
  {
    digitalWrite(led, LOW); // Turn OFF Led
  }
delay(100);
}