KY-003 (A3144) Magnetic digital sensor

// KY-003 (A3144) Magnetic digital sensor
int led = 13;
int hallPin = 8;
int value = 0;
void setup() {
  pinMode(led, OUTPUT);
  pinMode(hallPin, INPUT);
}
void loop() {
  value = digitalRead(hallPin) ; // Read value from Sensor
  if (value == LOW) {
    digitalWrite(led, HIGH); // If Sensor detects magnet: Builtin LED will Switch ON
  }
  else {
    digitalWrite(led, LOW);
  }
}