int reley = 13;
int button = 7;
int buzzer = 12;
int status = 0;
void setup() {
  pinMode(reley, OUTPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(button, INPUT);
  Serial.begin(9600);
}

void loop() {
  int holat = digitalRead(button);
  if(holat==HIGH){
  status= !status;
  delay(200);
}
  if (status == HIGH){
    noTone(buzzer);
    digitalWrite(reley, HIGH);
  }
  else{
   tone(buzzer,500);
   digitalWrite(reley, LOW);
  }
  Serial.println(status);
}