int switchState = 0;

void setup() {
  Serial.begin(9600);
  pinMode (4, OUTPUT);

}

void loop() {
switchState = digitalRead(2);

//digitalWrite (4, HIGH);
if (switchState == HIGH){
digitalWrite (4, LOW);
delay(4000);

digitalWrite (4, HIGH);
delay(2000);
}

else {
  digitalWrite(4, LOW);
 } 
}