int rele = 8;
int svich = 7;
void setup() {
  pinMode(rele, OUTPUT);
  pinMode(svich, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() {
  int holat = digitalRead(svich);
  if (holat == 1){
    digitalWrite(rele, HIGH);
    noTone(6);
  }
  else{
    digitalWrite(rele, LOW);
    tone(6, 400);
  }
}